This magickal phrase with the especially magickal words, rebuke and Jesus were taught to me when I was a child to "cast out demons" which was supposed to work for banishing demons from an area, exorcisms, and banishing demons in dreams.
As a child I had many lucid nightmares of demons chasing me, catching me, and torturing me. I said the magick words, and sometimes it worked. Most of the time, it didn't. Sometimes I would forget in my lucid nightmares to say the phrase, and I would just say, "Jesus Jesus Jesus." That didn't work any better or worse.
My lucid nightmares only went away when I decided to kill any demon that attacked me. I became consumed with rage in one dream finally as a teenager, and ripped the head off the nearest demon attacking me. Then, more demons came, and I killed and killed and killed until I slew hundreds of demons that dream, until they were all dead, and there I was, triumphant, covered in dark green demon blood, breathing hard, laughing in maniacal triumph. From then on, I never called on Jesus in my lucid nightmares, but I did tell myself God gave me the power to fight the demons. That was over 20 years ago.
Since then, I have become an even more extreme Christian, then Agnostic, Atheist, Hedonist, Satanist, Spiritualist, Pastafarian, Buddhist, and finally, Discordian.
For awhile I did not believe in demons, believing them to be thoughtforms, DC's, something made up in our minds. Now, I do believe some are sentient entities because of my personal experience, and some of them are thoughtforms. It seems there is a lot of truth mixed with disinfo in many religions, and we must wade through the bullshit to find the mushrooms of truth.