Reference : Hisn al-Muslim 88

يا حَـيُّ يا قَيّـومُ بِـرَحْمَـتِكِ أَسْتَـغـيث ،
أَصْلِـحْ لي شَـأْنـي كُلَّـه ،
وَلا تَكِلـني إِلى نَفْـسي طَـرْفَةَ عَـين
Yā Ḥayyu yā Qayyūmu biraḥmatika astaghīth 
aṣlih lī sha'nī kullah
wa lā takilnī ilā nafsī ṭarfata `ayn.

O Ever-Living One, O Eternal One, by Your mercy I call on You to set right all my affairs. 
Do not place me in charge of my soul even for the blinking of an eye (i.e. a moment).

Reference:
Its chain of transmission is sound (Sahih), Al-Hakim 1/545, see Albani, 
Sahihut-Targhib wat-Tarhib, 1/273.

Chapter: In the morning and evening