Quran 13:43 from Surah Ar-Ra'd on Divine Marvels.
وَيَقُولُ ٱلَّذِينَ كَفَرُواْ لَسۡتَ مُرۡسَلٗاۚ قُلۡ كَفَىٰ بِٱللَّهِ شَهِيدَۢا بَيۡنِي وَبَيۡنَكُمۡ وَمَنۡ عِندَهُۥ عِلۡمُ ٱلۡكِتَٰبِ
English translation: And say those who disbelieve You are not a Messenger Say Sufficient (is) Allah (as) a Witness between me and between you and whoever [he] has knowledge (of) the Book
Transliteration: wayaqulu alladhina kafaru lasta mur'salan qul kafa bil-lahi shahidan bayni wabaynakum waman indahu il'mu al-kitabi