اللَّهُمَّ صَلِّ وَ سَلِّمْ عَلَى نَبِيِّنَا مُحَمَّدٍ [عَشْرَ مَرَّاتٍ]

O Allāh, send prayers and blessings upon our prophet Muḥammad. [Ten times]

Reference: O Allāh, send prayers and blessings upon our prophet Muḥammad. [Ten times] Al-Ṭabarānī through two chains, one of which is good. See _Majm'u al-Zawā'id_ (10/120) and _Ṣaḥīḥ al-Targhīb wa al-Tarhīb_ (#656, 1/273).