Quran 7:132 from Surah Al-A'raaf on Divine Marvels.
وَقَالُواْ مَهۡمَا تَأۡتِنَا بِهِۦ مِنۡ ءَايَةٖ لِّتَسۡحَرَنَا بِهَا فَمَا نَحۡنُ لَكَ بِمُؤۡمِنِينَ
English translation: And they said Whatever you bring us therewith of (the) sign so that you bewitch us with it then not we (will be) in you believers
Transliteration: waqalu mahma tatina bihi min ayatin litasharana biha fama nahnu laka bimu'minina