اَللَّهُمَّ صَلِّ وَسَلِّمْ وَبَارِكْ عَلَى سَيِّدِنَا مُحَمَّدٍ الْفَاتِحِ لِمَا أُغْلِقَ، وَالْخَاتِمِ لِمَا سَبَقَ، نَاصِرِ الْحَقِّ بِالْحَقِّ، وَالْهَادِي إِلَى صِرَاطِكَ الْمُسْتَقِيمِ، وَعَلَى آلِهِ حَقَّ قَدْرِهِ وَمِقْدَارِهِ الْعَظِيمِ
Transliteration
Allahumma salli wa sallim wa barik 'ala sayyidina Muhammadin al-fatihi lima ughliqa, wal-khatimi lima sabaqa, nasiril-haqqi bil-haqqi, wal-hadi ila siratikal-mustaqimi, wa 'ala alihi haqqa qadrihi wa miqdarihil-'azim
English meaning
O Allah, send prayers, peace, and blessings upon our master Muhammad — the opener of what is closed, the seal of what preceded, helper of truth by truth, guide to Your straight path — and upon his family.
When is it recited?
On Friday and before important matters.
Source
Tijani tradition