Quran 2:193 from Surah Al-Baqara on Divine Marvels.
وَقَٰتِلُوهُمۡ حَتَّىٰ لَا تَكُونَ فِتۡنَةٞ وَيَكُونَ ٱلدِّينُ لِلَّهِۖ فَإِنِ ٱنتَهَوۡاْ فَلَا عُدۡوَٰنَ إِلَّا عَلَى ٱلظَّٰلِمِينَ
English translation: And fight (against) them until not (there) is oppression and becomes the religion for Allah Then if they cease then (let there be) no hostility except against the oppressors
Transliteration: waqatiluhum hatta la takuna fit'natun wayakuna al-dinu lillahi fa-ini intahaw fala ud'wana illa ala al-zalimina