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

Beyond the final dua, there are specific sunnah (recommended) actions to perform while the Adhan is being called: Ezan Duasi

"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 Allahumma Rabba hadhihid-da‘watit-tammah

اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ، وَالصَّلَاةِ الْقَائِمَةِ، آتِ مُحَمَّدًا الْوَسِيلَةَ وَالْفَضِيلَةَ، وَابْعَثْهُ مَقَامًا مَحْمُودًا الَّذِي وَعَدْتَهُ، [إِنَّكَ لَا تُخْلِفُ الْمِيعَادَ] Transliteration ati Muhammadanil-wasilata wal-fadhilah