You keep getting those feelings because you’re human.
If the feelings are intense, that’s the devil trying to weasel under your skin like a tick. Never mind the prayer warriors and all that business. YOU take your authority and tell him to back off. (You do know you have that authority, right?) Another thing you can do is each time he aggravates you like that, read a chapter of the Bible. Tell him if he does it again, you’re going to read another chapter. Sooner or later he’ll put two and two together and realize every time he irritates you, you’re going to put yourself in the Word. That’s not the result he wants. He’ll probably go find someone else to start trouble with.
Second, if those people you’re upset with wind up upsetting just the “right” people elsewhere, then they could get payback a lot worse than anything you could give them. I mean the prison kind, or the hospital kind. These things have a way of shaking out in that manner; dark energy has a way of attracting more dark energy.
Third, if they become Christians in the future, their consciousnesses will awaken and they’ll realize what jerks they’ve been. That’s when they’ll start kicking themselves in the butt for all the stupid things they’ve done. I’m sure it won’t bother you if they carry those internal burdens around for a while.
Fourth, if they’re not Christians and never become Christians, then when they finally die, the payback will be a) severe and b) unending.
You add that all up, and you're actually in a pretty good place.