"O Allah, Lord of this perfect call and established prayer. Grant Muhammad the intercession and favor, and raise him to the honored station (Al-Maqam al-Mahmud) You have promised him, [verily You do not neglect Your promise]". Etiquette of the Adhan
Beyond the final dua, there are specific sunnah (recommended) actions to perform while the Adhan is being called: Ezan Duasi
Allahumma Rabba hadhihid-da‘watit-tammah, was-salatil-qa’imah, ati Muhammadanil-wasilata wal-fadhilah, wab‘athhu maqamam-mahmudanil-ladhi wa‘adtah, [innaka la tukhliful-mi‘ad] . Translation "O Allah, Lord of this perfect call and established prayer
: Before reciting the Ezan Duası, it is recommended to send blessings (Salawat) upon the Prophet Muhammad. ati Muhammadanil-wasilata wal-fadhilah
: Repeat each phrase as the Mu'azzin (caller) says it.