Quran 17:46 from Surah Al-Israa on Divine Marvels.
وَجَعَلۡنَا عَلَىٰ قُلُوبِهِمۡ أَكِنَّةً أَن يَفۡقَهُوهُ وَفِيٓ ءَاذَانِهِمۡ وَقۡرٗاۚ وَإِذَا ذَكَرۡتَ رَبَّكَ فِي ٱلۡقُرۡءَانِ وَحۡدَهُۥ وَلَّوۡاْ عَلَىٰٓ أَدۡبَٰرِهِمۡ نُفُورٗا
English translation: And We have placed over their hearts coverings lest they understand it and in their ears deafness And when you mention your Lord in the Quran Alone they turn on their backs (in) aversion
Transliteration: waja'alna ala qulubihim akinnatan an yafqahuhu wafi adhanihim waqran wa-idha dhakarta rabbaka fi al-qur'ani wahdahu wallaw ala adbarihim nufuran