I had a series of dreams that predicted the war in Ukraine (some 5- 7 years ago), one of the dreams, contained aliens. The alien's goal in the dream was to bring deception. So I believe that although aliens may manifest, they will really be demons, and try to draw people away from Christ. I have posted my dreams below for some context.
In one which was full of light, I saw Russian fighting vehicles, and I felt, not heard, an impression that the End was on us. The impression was the very end was here.
The second dream, I was moving down a road, and I saw the Russian army approaching, in front of the army was a man, who was overweight, had a beard, and had sowed the breast of a woman to his chest. I felt he was a rapist or a murderer. Then the conflict erupted, from memory, I saw tanks and planes. When the planes flew in something happened, and I saw what appeared to be aliens, I am not sure but from memory, they seemed to fight in the conflict. Later I actually saw the aliens, they were in a flying car-like thing and were trying to deceive a youth, when they took flight the youth became deceived and entered a zombie-like state. The dream ended.
In the third dream, I saw darkness, and people running and walking to get away from the Russian army, in the dream I entered a shop to get food or weapons but when I got there there was no food or weapons. At the shop, I saw two athletes, and they held a flag that became covered in blood. I saw Russian civilians celebrating a war or war victory. I then saw myself, I had to stay behind to fight or help, and my wife and family got onto a big white ship and left me. I saw a hole in the ground, only shallow, like a shallow grave, and saw trees with autumn leaves, the leaves were over the grave. And something was said but I could not decern it.
As for the third dream, things that came to pass:
a) People did run and walk to escape the Russian Army
b) It was at the time of the winter olympics, hence the athletes
c) The men had to stay behind to fight, only their families could leave.