It is narrated from Hazrat Anas (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: Every prophet certainly had a supplication which he made for his ummah and it was accepted, whereas I have reserved my supplication for interceding for my ummah on the Day of Judgment.
Hadith Referenceمسند احمد / مسند المكثرين من الصحابة / 13170