Virtue: Whoever says this 100 times in the morning and 100 times in the evening, no one will come on the Day of Resurrection with something more excellent.
Allāhumma anta rabbī lā ilāha illā ant, khalaqtanī wa anā 'abduk, wa anā 'alā 'ahdika wa wa'dika mastaṭa't, a'ūdhu bika min sharri mā ṣana't, abū'u laka bini'matika 'alayy, wa abū'u laka bidhanbī faghfir lī fa'innahū lā yaghfirudh-dhunūba illā ant
Translation
O Allāh, You are my Lord. There is no god but You. You created me and I am Your servant. I am trying to keep my covenant and promise to You as best I can. I seek refuge in You from the evil I have done. I acknowledge Your blessings and I acknowledge my sin. Forgive me, for there is no one who forgives sins except You.
Virtue: The Prophet ﷺ said: Whoever says this in the morning firmly believing in it and dies that day before evening, they will be among the people of Paradise. Likewise for evening.