It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both): In the two Eids, the Prophet (peace and blessings be upon him) would recite Surah al-Fatihah and "Sabbih isma rabbika al-a'la" (Surah al-A'la) in the first rak'ah, and Surah al-Fatihah and "Hal ataka hadith al-ghashiyah" (Surah al-Ghashiyah) in the second rak'ah.
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 10742