Quran 18:83 from Surah Al-Kahf on Divine Marvels.
وَيَسۡـَٔلُونَكَ عَن ذِي ٱلۡقَرۡنَيۡنِۖ قُلۡ سَأَتۡلُواْ عَلَيۡكُم مِّنۡهُ ذِكۡرًا
English translation: And they ask you about Dhul-qarnain Dhul-qarnain Say I will recite to you about him a remembrance
Transliteration: wayasalunaka an dhi al-qarnayni qul sa-atlu alaykum min'hu dhik'ran