Quran 28:86 from Surah Al-Qasas on Divine Marvels.
وَمَا كُنتَ تَرۡجُوٓاْ أَن يُلۡقَىٰٓ إِلَيۡكَ ٱلۡكِتَٰبُ إِلَّا رَحۡمَةٗ مِّن رَّبِّكَۖ فَلَا تَكُونَنَّ ظَهِيرٗا لِّلۡكَٰفِرِينَ
English translation: And not you were expecting that would be sent down to you the Book except (as) a mercy from your Lord So (do) not be an assistant to the disbelievers
Transliteration: wama kunta tarju an yul'qa ilayka al-kitabu illa rahmatan min rabbika fala takunanna zahiran lil'kafirina