In general, your enemies will look for two things from you, either a reaction or for you to be in pain. The first is mainly because they're insecure and want to feel like they have power over you, the second is because you have caused them sever pain formerly and they still can't get over it thus trying to inflict the same on you.
Your response shall be one: Ignore. By ignoring, you both don't give them that satisfaction of having power over you, and you're not in pain therefore leading them to always be in pain themselves.
“The supreme art of war is to subdue the enemy without fighting.”
― Sun Tzu, The Art of War
and for that I end this with:
“When you surround an army, leave an outlet free. Do not press a desperate foe too hard.”
― Sun Tzu