﴿ ٱدْفَعْ بِٱلَّتِى هِىَ أَحْسَنُ ٱلسَّيِّئَةَ ۚ نَحْنُ أَعْلَمُ بِمَا يَصِفُونَ ﴾

“[But whatever they may say or do,] repel the evil [which they commit] with something that is bet­ter: We are fully aware of what they attribute [to Us].”

(Repel evil with that which is better) repel by means of " there is no god except Allah " the expression of idolatry which is coming from Abu Jahl and his host; and it is also said that this means: repel from yourself their indecent talk through the greeting of peace. (We are best Aware of that which they allege) of lies.