What do you do when you know someone will fight with you the next time you see each other?

(When I say fight, I mean verbally) - I know someone who, the next time we see each other, will try to pick a fight with me. Since I don't like that person, chances are I'll snap depends on what she says. I don't deal well with people who I dislike speaking about me, and this is the type of person that will try to insult you with a superior attitude, which I really dislike. I'm already getting annoyed (-_-) I hate this.