Is the phrase "O Allah, send prayers upon Muhammad, upon him be the best of prayers and peace" correct as a prayer upon the Prophet?

Prayers upon the Prophet, peace and blessings be upon him, are valid with the mentioned formulas, and each formula conveys the meaning, and the matter is broad. It is best to adhere to the wordings narrated in the Sunnah. It is important to note that the linguistically correct form is: "Allahumma salli 'ala" (O Allah, send prayers upon).