Quran 7:121 from Surah Al-A'raaf on Divine Marvels.
قَالُوٓاْ ءَامَنَّا بِرَبِّ ٱلۡعَٰلَمِينَ
English translation: They said We believe in (the) Lord (of) the worlds
Transliteration: qalu amanna birabbi al-'alamina