What is the prescribed manner of supplication for the Mu'adhin before calling the Fajr Adhan?

Primary text

The Mu'adhin, specifically Bilal according to the established practice, should supplicate before the Fajr Adhan, saying: "O Allah, I seek Your aid and relief against Quraysh, that they establish Your religion." This is established through the report from the woman of Banu Najjar via Abu Dawud.