The Prophet (May peace be upon him) used to seek refuge in Allah for al-Hasan and al-husain, saying ; I seek refuge for both of you in the perfect words of Allah from every devil and every poisonous thing and from the evil eye which influences. He would then say; your father sought refuge in Allah by them for Ismail and Ishaq. Abu Dawud said; this is a proof of the fact that the Quran is not created. (Using translation from Abū Dāʾūd 4737)   

عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ يُعَوِّذُ الْحَسَنَ وَالْحُسَيْنَ «أُعِيذُكُمَا بِكَلِمَاتِ اللهِ التَّامَّةِ مِنْ كُلِّ شَيْطَانٍ وَهَامَّةٍ وَمَنْ شَرِّ كُلِّ عَيْنٍ لَامَّةٍ» وَيَقُولُ «هَكَذَا كَانَ أَبِي إِبْرَاهِيمُ يُعَوِّذُ إِسْمَاعِيلَ وَإِسْحَاقَ»