Ibn `Abbas said:
“The Prophet (ﷺ) used to supplicate, saying: “My Lord, aid me and do not aid against me, and grant me victory and do not grant victory over me, plot for me and do not plot against me, guide me and facilitate guidance for me, grant me victory over those who transgress against me. My Lord, make me ever-grateful to You, ever-remembering of You, ever-fearful of You, ever-obedient to You, ever-humble to You, oft-turning and returning to You. My Lord, accept my repentance, wash my sin, answer my call, make firm my proof, make firm my tongue, guide my heart, and remove the treachery of my chest
Grade : Sahih correct (Darussalam)
Reference : Jami` at-Tirmidhi 3551
In-book reference : Book 48, Hadith 182
English translation : Vol. 6, Book 45, Hadith 3551

Abdullah (b. Mas'ud) reported that Allah's Messenger (may peace be upon him) who is the most truthful (of the human beings) and his being truthful (is a fact) said: Verily your creation is on this wise. The constituents of one of you are collected for forty days in his mother's womb in the form of blood, after which it becomes a clot of blood in another period of forty days. Then it becomes a lump of flesh and forty days later Allah sends His angel to it with instructions concerning four things, so the angel writes down his livelihood, his death, his deeds, his fortune and misfortune. By Him, besides Whom there is no god, that one amongst you acts like the people deserving Paradise until between him and Paradise there remains but the distance of a cubit, when suddenly the writing of destiny overcomes him and he begins to act like the denizens of Hell and thus enters Hell, and another one acts in the way of the denizens of Hell, until there remains between him and Hell a distance of a cubit that the writing of destiny overcomes him and then he begins to act like the people of Paradise and enters Paradise. (Book #033, Hadith #6390)