Quran 17:45 from Surah Al-Israa on Divine Marvels.
وَإِذَا قَرَأۡتَ ٱلۡقُرۡءَانَ جَعَلۡنَا بَيۡنَكَ وَبَيۡنَ ٱلَّذِينَ لَا يُؤۡمِنُونَ بِٱلۡأٓخِرَةِ حِجَابٗا مَّسۡتُورٗا
English translation: And when you recite the Quran We place between you and between those who (do) not believe in the Hereafter a barrier hidden
Transliteration: wa-idha qarata al-qur'ana ja'alna baynaka wabayna alladhina la yu'minuna bil-akhirati hijaban masturan