Quran 55:35 from Surah Ar-Rahmaan on Divine Marvels.
يُرۡسَلُ عَلَيۡكُمَا شُوَاظٞ مِّن نَّارٖ وَنُحَاسٞ فَلَا تَنتَصِرَانِ
English translation: Will be sent against both of you a flame of fire and smoke and not you will (be able to) defend yourselves
Transliteration: yur'salu alaykuma shuwazun min narin wanuhasun fala tantasirani