"turn the other cheek" taken to mean let a criminal or enemy do whatever they want (pacifism). Not true, a slap in the face is an insult, it means don't respond to insults or be quick to anger, not let a criminal rape your wife, then offer your daughter.
"eye for an eye" to justify revenge. Again not true. In the Middle Eastern culture, punishments are often more severe than the crime, revenge/honor are big things. So, that is saying don't go overboard, at most...the punishment should fit the crime exactly no more. An eye for an eye, not a stoning to death for an eye.