Quran 44:18 from Surah Ad-Dukhaan on Divine Marvels.
أَنۡ أَدُّوٓاْ إِلَيَّ عِبَادَ ٱللَّهِۖ إِنِّي لَكُمۡ رَسُولٌ أَمِينٞ
English translation: That Deliver to me (the) servants (of) Allah Indeed I am to you a Messenger trustworthy
Transliteration: an addu ilayya ibada al-lahi inni lakum rasulun aminun