Luke 6:27-28, “But I say to you who hear: Love your enemies; do good to those who hate you, bless those who curse you, pray for those who abuse you.”
This saying is for ordinary people in their everyday lives. How do we love our enemies? Jesus tells us how. Do good things toward them—assist them, help them. Who slanders you? Bless them with kind words. Who abuses you? Pray for their souls. Let the government deal with them accordingly, as is its job (Romans 13:3-4).
As a Christian, your sole responsibility is to love, even your enemies. If the idea of loving your enemy sickens you, then Islam is your religion, which calls for the killing of your enemies if they do not subjugate (Qur’an 2:193; 3:118; 4:76; 9:5, 29; 47:4; etc.). Jesus commands His people to do good works and pray for our enemies. Why not? Jesus, after all, died for the ungodly—His enemies (Romans 5:6).
Whilst we were enemies of God, we were reconciled to God by the death of His Son (Romans 5:10). Thus, loving our enemies is not all that bad considering the extent to which Jesus loved His enemies—which was all of us—in His passion-suffering.