Quran 26:186 from Surah Ash-Shu'araa on Divine Marvels.
وَمَآ أَنتَ إِلَّا بَشَرٞ مِّثۡلُنَا وَإِن نَّظُنُّكَ لَمِنَ ٱلۡكَٰذِبِينَ
English translation: And not you (are) except a man like us and indeed we think you surely (are) of the liars
Transliteration: wama anta illa basharun mith'luna wa-in nazunnuka lamina al-kadhibina