Quran 18:38 from Surah Al-Kahf on Divine Marvels.
لَّٰكِنَّا۠ هُوَ ٱللَّهُ رَبِّي وَلَآ أُشۡرِكُ بِرَبِّيٓ أَحَدٗا
English translation: But as for me He (is) Allah my Lord and not I associate with my Lord anyone
Transliteration: lakinna huwa al-lahu rabbi wala ush'riku birabbi ahadan