Sheikh Abdul Aziz bin Baz, may Allah have mercy on him, says: There are three supplications you should not forget in sujud: O Allah, I ask You for a good ending.
O Allah, grant me sincere repentance before death. O Allah, Controller of the hearts, make my heart firm upon Your religion.
Even if you intend to share these words, intend good by it. Perhaps Allah will relieve you of a hardship in this world or the Hereafter because of it.
And remember, do good as much as you can, for you do not know which deed will admit you to jannah. Sheikh Khalid says: Repeat, I seek forgiveness from Allah, there is no deity except Him, the Ever-Living, the Sustainer, and I repent to Him.
As many times as His creation, as much as pleases Him, as heavy as His Throne, and as much as the ink of His words. You will see wonders in the relief of worries and the easing of affairs.
Do not keep it to yourself, send it to the dearest people to you. Every minute of our lives is a breath that will not return.
Your breaths are preserved for me as sweetness through seeking forgiveness. O Allah, make this reminder a continuous charity for me and my parents.