There are a number of ways to say the blessings upon the Prophet ﷺ. The ideal way is to say:
Allaahumma salli ‘ala Muhammad wa ‘ala aali Muhammad kama salayta ‘ala Ibraaheem wa ‘ala aali Ibraaheem, innaka hameedun majeed. Allaahumma baarik ‘ala Muhammad wa ‘ala aali Muhammad kama baarakta ‘ala Ibraaheem wa ‘ala aali Ibraaheem, innaka hameedun majeed
(O Allaah, send prayers upon Muhammad and upon the family of Muhammad, as You sent prayers upon Ibraaheem and upon the family of Ibraaheem; You are indeed Worthy of Praise, Full of Glory. O Allaah, send blessings upon Muhammad and upon the family of Muhammad as You sent blessings upon Ibraaheem and upon the family of Ibraaheem; You are indeed Worthy of Praise, Full of Glory).”
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