Quran 66:4 from Surah At-Tahrim on Divine Marvels.
إِن تَتُوبَآ إِلَى ٱللَّهِ فَقَدۡ صَغَتۡ قُلُوبُكُمَاۖ وَإِن تَظَٰهَرَا عَلَيۡهِ فَإِنَّ ٱللَّهَ هُوَ مَوۡلَىٰهُ وَجِبۡرِيلُ وَصَٰلِحُ ٱلۡمُؤۡمِنِينَۖ وَٱلۡمَلَٰٓئِكَةُ بَعۡدَ ذَٰلِكَ ظَهِيرٌ
English translation: If you both turn to Allah so indeed (are) inclined your hearts; but if you backup each other against him then indeed Allah He (is) his Protector and Jibreel and (the) righteous believers and the Angels after that (are his) assistants
Transliteration: in tatuba ila al-lahi faqad saghat qulubukuma wa-in tazahara alayhi fa-inna al-laha huwa mawlahu wajib'rilu wasalihu al-mu'minina wal-malaikatu ba'da dhalika zahirun