Surah Aali Imran (The Family of Imran), Verse 149

یٰۤاَیُّهَا الَّذِیْنَ اٰمَنُوْۤا اِنْ تُطِیْعُوا الَّذِیْنَ كَفَرُوْا یَرُدُّوْكُمْ عَلٰۤی اَعْقَابِكُمْ فَتَنْقَلِبُوْا خٰسِرِیْنَ ۟

Yaaa 'aiyuhal lazeena aamanoo in tutee'ullazeena kafaroo yaruddookum 'alaaa a'qaabikum fatanqaliboo khaasireen

“O ye who believe! If ye obey the Unbelievers, they will drive you back on your heels, and ye will turn back (from Faith) to your own loss.”

Quran 3:149 (Yusuf Ali Translation)