Qur'ān 23:96 · Al-Mu'minun (المؤمنون)

ٱدْفَعْ بِٱلَّتِى هِىَ أَحْسَنُ ٱلسَّيِّئَةَ ۚ نَحْنُ أَعْلَمُ بِمَا يَصِفُونَ

Repel, by [means of] what is best, [their] evil. We are most knowing of what they describe.