Verse 48

وَإِذْ زَيَّنَ لَهُمُ ٱلشَّيْطَـٰنُ أَعْمَـٰلَهُمْ وَقَالَ لَا غَالِبَ لَكُمُ ٱلْيَوْمَ مِنَ ٱلنَّاسِ وَإِنِّى جَارٌ لَّكُمْ فَلَمَّا تَرَآءَتِ ٱلْفِئَتَانِ نَكَصَ عَلَىٰ عَقِبَيْهِ وَقَالَ إِنِّى بَرِىٓءٌ مِّنكُمْ إِنِّىٓ أَرَىٰ مَا لَا تَرَوْنَ إِنِّىٓ أَخَافُ ٱللَّهَ وَٱللَّهُ شَدِيدُ ٱلْعِقَابِ

And when Satan adorned their works in their eyes and said, no one can defeat you today since I am on your side, however, when he saw the two armies, he turned around saying, I am no longer with you, I see what you do not see, I am indeed afraid of God. And God enforces the most severe consequence.