﴿ وَإِنْ عَاقَبْتُمْ فَعَاقِبُوا۟ بِمِثْلِ مَا عُوقِبْتُم بِهِۦ ۖ وَلَئِن صَبَرْتُمْ لَهُوَ خَيْرٌۭ لِّلصَّٰبِرِينَ ﴾

“Hence, if you have to respond to an attack (in argument], respond only to the extent of the attack levelled against you; but to bear yourselves with patience is indeed far better for (you, since God is with] those who are patient in adversity.”

Please check ayah 16:128 for complete tafsir.