Matthew 5:38-46 (New International Version)

An Eye for an Eye
 38"You have heard that it was said, 'Eye for eye, and tooth for tooth.'[a] 39But I tell you, Do not resist an evil person. If someone strikes you on the right cheek, turn to him the other also. 40And if someone wants to sue you and take your tunic, let him have your cloak as well. 41If someone forces you to go one mile, go with him two miles. 42Give to the one who asks you, and do not turn away from the one who wants to borrow from you.
Love for Enemies
 43"You have heard that it was said, 'Love your neighbor[b] and hate your enemy.' 44But I tell you: Love your enemies[c] and pray for those who persecute you, 45that you may be sons of your Father in heaven. He causes his sun to rise on the evil and the good, and sends rain on the righteous and the unrighteous. 46If you love those who love you, what reward will you get? Are not even the tax collectors doing that?

From 5:38-46&version=NIV