Quran 17:110 from Surah Al-Israa on Divine Marvels.
قُلِ ٱدۡعُواْ ٱللَّهَ أَوِ ٱدۡعُواْ ٱلرَّحۡمَٰنَۖ أَيّٗا مَّا تَدۡعُواْ فَلَهُ ٱلۡأَسۡمَآءُ ٱلۡحُسۡنَىٰۚ وَلَا تَجۡهَرۡ بِصَلَاتِكَ وَلَا تُخَافِتۡ بِهَا وَٱبۡتَغِ بَيۡنَ ذَٰلِكَ سَبِيلٗا
English translation: Say Invoke Allah or invoke the Most Gracious By whatever (name) By whatever (name) you invoke to Him (belongs) the Most Beautiful Names the Most Beautiful Names And (do) not be loud in your prayers and not be silent therein but seek between that a way
Transliteration: quli id'u al-laha awi id'u al-rahmana ayyan ma tad'u falahu al-asmau al-hus'na wala tajhar bisalatika wala tukhafit biha wa-ib'taghi bayna dhalika sabilan