﴿ وَلَا تَسْتَوِى ٱلْحَسَنَةُ وَلَا ٱلسَّيِّئَةُ ۚ ٱدْفَعْ بِٱلَّتِى هِىَ أَحْسَنُ فَإِذَا ٱلَّذِى بَيْنَكَ وَبَيْنَهُۥ عَدَٰوَةٌۭ كَأَنَّهُۥ وَلِىٌّ حَمِيمٌۭ ﴾

“But [since] good and evil cannot be equal, repel thou [evil] with something that is better and lo! he between whom and thyself was enmity [may then become] as though he had [always] been close [unto thee], a true friend!”

Please check ayah 41:36 for complete tafsir.