Sunan Abi Dawud Book 2, Hadith 139
if anyone says when he hears the call to prayer : “O Allah, Lord of this perfect call and of the prayer which is established for all time, grant Muhammad the wasilah and excellency, and raise him up in a praiseworthy position which Thou hast promised, he will be assured of my intercession.
Bilal began the Iqamah, and when he said: "The time for prayer has come," the Prophet (ﷺ) said: "May Allah establish it and cause it to continue."
The Messenger of Allah (ﷺ) taught me to say when the adhan for the sunset prayer was called; "O Allah, this is the time when Thy night comes on, Thy day retires, and the voices of Thy summoners are heard, so forgive me."