Sura 17 Al-Isra (The Night Journey), ayah 45

1. وَإِذَا قَرَأْتَ الْقُرْآنَ جَعَلْنَا بَيْنَكَ وَبَيْنَ الَّذِينَ لَا يُؤْمِنُونَ بِالْآخِرَةِ حِجَابًا مَسْتُورًا

   And when you recite the Qur'an, We put between you and those who do not believe in the Hereafter a concealed partition.

   17:45

Translation: Saheeh International