Du'a after the Adhan
اللَّهُمَّ رَبَّ هَذِهِ الدَّعْوَةِ التَّامَّةِ وَالصَّلَاةِ الْقَائِمَةِ، آتِ مُحَمَّدًا الْوَسِيلَةَ وَالْفَضِيلَةَ
Allaahumma rabba haathihid-da'watit-taammah, was-salaatil-qaa'imah, aati Muhammadanil-waseelata wal-fadeelah.
O Allah, Lord of this perfect call and the prayer to be established, grant Muhammad the intercession and the high station.
Source: Sahih al-Bukhari 614