I have learned the best way to handle this kinda stuff is to simply ignore it.. Eventually he will become bored with not getting a "reaction" and maybe that is what in part he does it for ?

Yes its hard to just ignore things like this but if he's not up for calling a truce and being okay with your opinion being okay for you, than what other option do you have besides "ignore"

As Chippermonkey said .. Can you just spend less time around him? Spend more time with your friends?

I hope all this stops for you quickly.