كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُعَوِّذُ الْحَسَنَ وَالْحُسَيْنَ " أُعِيذُكُمَا بِكَلِمَاتِ اللَّهِ التَّامَّةِ ، مِنْ كُلِّ شَيْطَانٍ وَهَامَّةٍ ، وَمِنْ كُلِّ عَيْنٍ لَامَّةٍ "
The Prophet (ﷺ) used to seek Allah's protection for Al-Hasan and Al-Husain by saying: U`īthukumā bikalimāti ‘llāhit-tāmmati min kulli shayṭānin wa hāmmah, wa min kulli `aynin lāmmah
I seek protection for you in the Perfect Words of Allah from every devil and every beast, and from every envious blameworthy eye.
Al-Bukhari4/119.