Surah Ah-Shu'ara' (The Poets), Verse 227

اِلَّا الَّذِیْنَ اٰمَنُوْا وَعَمِلُوا الصّٰلِحٰتِ وَذَكَرُوا اللّٰهَ كَثِیْرًا وَّانْتَصَرُوْا مِنْ بَعْدِ مَا ظُلِمُوْا وَسَیَعْلَمُ الَّذِیْنَ ظَلَمُوْۤا اَیَّ مُنْقَلَبٍ یَّنْقَلِبُوْنَ 

Illal lazeena aamanoo wa 'amilus saalihaati wa zakarul laaha kaseeranw wantasaroo min ba'di maa zulimoo; wa saya'lamul lazeena zalamooo aiya munqalabiny yanqaliboon

“Except those who believe, work righteousness, engage much in the remembrance of Allah, and defend themselves only after they are unjustly attacked. And soon will the unjust assailants know what vicissitudes their affairs will take!”

Quran 26:227 (Yusuf Ali Translation)