Surah Al-An'am (The Cattle), Verse 40

قُلْ اَرَءَیْتَكُمْ اِنْ اَتٰىكُمْ عَذَابُ اللّٰهِ اَوْ اَتَتْكُمُ السَّاعَةُ اَغَیْرَ اللّٰهِ تَدْعُوْنَ اِنْ كُنْتُمْ صٰدِقِیْنَ ۟

Qul ara'aytakum in ataakum 'azaabul laahi aw atatkumus Saa'atu a-ghairal laahi tad'oona in kuntum saadiqeen

“Say: "Think ye to yourselves, if there come upon you the wrath of Allah, or the Hour (that ye dread), would ye then call upon other than Allah?- (reply) if ye are truthful!”

Quran 6:40 (Yusuf Ali Translation)