Umayr bin Sa'id said: I heard Sayyiduna Abdullah (may Allah be pleased with him) say: When one of you sits in the prayer, let him say: al-Tahiyyat (All acts of worship) - then he mentioned the words of the tashahhud - then he said: Then let him say: "O Allah, I ask You for every good, that which I know and that which I do not know, and I seek refuge in You from every evil, that which I know and that which I do not know. O Allah, I ask You for the good that Your righteous servants asked You for, and I seek refuge in You from the evil from which Your righteous servants sought refuge. Our Lord, give us good in this world and good in the Hereafter, and protect us from the punishment of the Fire. Our Lord, we have believed, so forgive us our sins, remove from us our misdeeds, and cause us to die among the righteous. Our Lord, grant us what You promised us through Your messengers, and do not disgrace us on the Day of Resurrection; indeed, You do not fail in Your promise."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 9905