وَإِذْ زَيَّنَ لَهُمُ ٱلشَّيْطَـٰنُ أَعْمَـٰلَهُمْ وَقَالَ لَا غَالِبَ لَكُمُ ٱلْيَوْمَ مِنَ ٱلنَّاسِ وَإِنِّى جَارٌۭ لَّكُمْ ۖ فَلَمَّا تَرَآءَتِ ٱلْفِئَتَانِ نَكَصَ عَلَىٰ عَقِبَيْهِ وَقَالَ إِنِّى بَرِىٓءٌۭ مِّنكُمْ إِنِّىٓ أَرَىٰ مَا لَا تَرَوْنَ إِنِّىٓ أَخَافُ ٱللَّهَ ۚ وَٱللَّهُ شَدِيدُ ٱلْعِقَابِ
“And [remember] when Satan made their deeds pleasing to them and said, "No one can defeat you today from amongst the people; and indeed, I am your protector!" But when the two armies faced each other, he turned his back around and said, "Indeed, I am disassociated from you. Indeed, I see what you do not see; indeed, I fear Allah. And Allah is severe in punishment."”
On Shaytan appearing to the Quraysh in the form of Suraqa ibn Malik, promising protection, then fleeing at the sight of the angels.