I experience lucid dreams almost every night. This particular evening is no different. In my dream, I'm attending a house party with my friends, two of which are sticking close to me. Being lucid, we're having a good time and I ask these two if they want to adventure. We decide that we will take a walk around the neighborhood. We leave the house and start walking down the street. All of a sudden, it's as if my dream resets. It was very sudden & I didn't will this to happen. As I'm looking around, I notice that everything is off. I don't know the people at this party and my two friends near me aren't people I know. I start looking around and more closely at the people around me until I snag on someone. I don't recognize them, but something inside me screams at the wrongness. I approach this person. They appear to be male, in mostly nondescript clothes. Oversized hoodie and a blue ball cap covering their face. Upon closer inspection, they had no discernible features. (Like smoothed over eyes & mouth) I say out loud in my lucid state, "Who are you? You're NOT supposed to be here..." As soon as the words are out, the world starts to violently shake. Pieces of the walls and environment are starting to fall and crumble around me. I am struck with such an intense, vile revulsion. I knew I needed out and out NOW. I literally pushed with all my mental fortitude to wake up. I repeated, "WAKE UP" 3 times. I felt myself in limbo between dream and reality. I then repeated, "YOU'RE NOT WELCOME HERE" 3 times. At this point my mind is in the dream but I can hear my physical body croak with a scream. As I fully come into my physical body, I repeat "This is MY space, I evict you" 3 times.. My heartrate was astronomical when I came fully into myself. Whatever entity attempted to invade my space was absolutely pissed I recognized it for what it was. I haven't lucid dreamed since.