Ali 'Imran 3:111

Lan yadurrookum illa athanwa-in yuqatilookum yuwallookumu al-adbara thumma layunsaroon

They will not harm you except for [some] annoyance. And if they fight you, they will show you their backs [i.e., retreat]; then they will not be aided.

They shall never (be able to) cause you any harm except a little hurt. If they fight you, they will turn their backs on you, then they shall not be helped.