Romans 12: 18-21
If it be possible, as much as lieth in you, live peaceable with all men.
Dearly beloved, avenge not yourselves, but rather give place unto wrath: for it is written, Vengeance is mine; I will repay, saith the Lord.
Therefore if thine enemy hunger, feed him; if he thirst, give him drink: for in so doing thou shalt heap coals of fire on his head.
Be not overcome of evil, but overcome evil with good.
I don't have anything to add to these verses. They are pretty self-explanatory, I think. They make for good preaching and hard living. But if we walk in the light of these verses, we will have peace in our souls, no matter how we may be treated.
I would love to hear comments on how you have lived out these verses in your life. : )