الزخرف — Az-Zukhruf Ayat 37
وَاِنَّهُمْ لَيَصُدُّوْنَهُمْ عَنِ السَّبِيْلِ وَيَحْسَبُوْنَ اَنَّهُمْ مُّهْتَدُوْنَ
Wa innahum layaṣuddūnahum ‘anis-sabīli wa yaḥsabūna annahum muhtadūn(a).
"And indeed, the devils avert them from the way [of guidance] while they think that they are [rightly] guided"