The Prophet (SAW) used to seek Allah's protection for Al-Hasan and Al-Husain by saying:
146. 'U'eethukumaa bikalimaatil-laahit-taammati min kulli shaytaanin wa haammatin, wa min kulli 'aynin laammatin.
I seek protection for you in the Perfect Words of Allah from every devil and every beast , and from every envious blameworthy eye.
Reference:
Al-Bukhari4/119.