Hi Godiva.
I've heard quite a few testimonies that support the existence of entities that want to hurt you, and the movie
The Entity (1982) comes to mind.
I recall when I was a child little over 2 or 3 feet tall that people would walk through the walls in my bedroom, and some would even stop to talk to me. I talked back, until one time when my mother asked who I was talking to -- it was then I learned two things: 1) there was no such thing as ghosts and 2) they were of the devil... after that point I became terrified of them, and pulled the covers over my eyes to hide from them. That was an attempt that failed, because I could still see them (while I could close my physical eyes, I was unable to close my third eye -- and ears -- at that age). But with respect to that experience, none were malicious in any way. I guess they were just happy someone could see and hear them.
A decade ago or so on the newsgroup AHR (alt.healing.reiki) there was a lady named Elisabeth Magnussa Phoenix who was apparently quite aware of entities, especially the ones wanting to harm people. Elisabeth was a very nice person (but not so flexible when it came to other Reiki styles than her own). In my opinion, it seems her focus was battling these negative energies, but the more she seemed to defeat them, it seems the more new ones appeared to take the place of their friends. My understanding is that Elisabeth eventually passed away from a poisonous snake bite, but I may be wrong on that.
When I was in my late 20's, early 30's, I had a rather profound Reiki meditation experience. I was sitting on a cushion in crossed-leg style with my back erect, and hand resting comfortably in my lap. I meditated on what I was taught to be the Reiki energies (it was different then to what it is today), and imagined a sphere of protective white light encircling me. It felt good and... protective. I felt safe. After a bit I noticed various entities approaching the sphere. Some tried to break through, while others just stopped for a moment or so and drifted off to look for someone else. Not long thereafter, bigger ones began to notice me and attempt to break into the sphere. These were very large entities possessing a dark, unhealthy colors of black and grey in their bodies. I grew a little bit uneasy from their size, so increased the radiance, the power, of my protective shield.
It seems that the more I increased the power of the protective shield, the more were attracted. It got to the point were I was growing really concerned, so I decided to use attunement-level energies to power up the force field I was creating. I imagined the attunement process that I was taught, and imagined the attunement energies simply radiating outwards from all directions of the sphere.
Most of the entities hurried away, but a few remained. I continued to broadcast the attunement energies until I reached my limit -- I just couldn't access any more than what I was, and I certainly didn't want to stop the process considering what was waiting outside the protective sphere... so I continued to sit in meditation.
The attunement radiance continued to power the protective shield well enough, but the entities were acting "strange." It was strange in the sense they didn't act like the others. I recall one of the others taking a small bite out of the sphere and then quickly spitting it out, looking at me with disgust, and flying away apparently to find something else that tasted better. But those that remained were different.
After a time I tried to increase the power of the sphere in the hopes they would find its energies distasteful, but instead of moving away, they moved closer until they actually touched the sphere.
A part of me was expecting at least one of them to break through, as they opened their mouths and pressed firmly against the field and began to suck its protective energies.
I was comforted that Reiki offered unlimited access to universal healing energy, but even so this did not bode well for me. I began to grow concerned about what type of cancerous disease I would manifest if they got through and went into my body. There really wasn't anything I could do except sit and wait.
After re-assuring myself that I was as connected as possible to the Reiki source energy and as much of it as possible was powering up this force field protecting me, I focused my attention on the entities that were now trying to drain its energies.
I began to review what I knew about negative entities. They manifest inside a persons body like a parasite and cause diseases such as cancer, and do so because they feed off of the persons bio-life force energy, and then it hit me. These guys just wanted to eat! They detected something in me that apparently smelled good enough to eat, and as they weren't going away, I decided to give them what they wanted.
And I did. I re-tuned myself to the Reiki attunement energies, released the protective sphere, and invited them to approach my body and dine away.
They began to approach, slowly, in a creepy, slimy spirit snakey sort of way. Again, images of hosting these parasites in my body terrified the hell out of me, but as they wouldn't go away I assumed they were present for my greater good, and I tuned into Reiki a bit more. Their mouths opened, sucking in the Reiki now emanating outward from my body, when suddenly they began to change.
Their approach stopped, and I sensed something was different inside them. Now, they had been "eating" the Reiki healing/attunement energies, but these guys didn't look like it gave them an upset stomach like their friends who spit it out and flew away. They floated for a moment, hovering only a few feet from my body, and suddenly the black and gray of their bodies and auras burst apart, revealing a brilliantly beautiful being of light.
These creatures were no longer absorbing energies from around them, but rather radiating energy outward. I could feel it, and it felt absolutely wonderful.
The lesson I learned is that Reiki energies were naturally protective. It's not necessary to "banish and cleanse" negative energies from a space when Reiki is involved, because Reiki is a natural cleanser... and apparently, one that results in wonderful transformations for all in the area.
Contacting your Reiki Guide is channeling, but there are different types of channeling. Conscious Channeling is the safest, because the person doing so remains in complete conscious control. I haven't been to Rick's channeling pages in quite a long time, but here are a few links to more information: