well he started the fight on IRC i was just chating to other people about staff and he kicked me for no reason!
So? You don't have to part-take in his silly antics.
If he really does troll you, your response is merely power toward him. He doesn't really care how you act, so long as he gets a laugh from it.
And, once again, it is no need to get angry. Be calm. Stay collected. If you really begin to get angry, leave. There is no reason one can't walk away from a "fight". :/
Magick, he will never take anything from you. And if he says he is, he'll come back. I'm not sure you can do anything.
One never knows. Even if he apples it not to now, perhaps he will at another time. And even if ot, at least this would be diffused.