Reference : Hisn al-Muslim 211

أَسْتَـوْدِعُكُـمُ اللَّهَ الَّذي لا تَضـيعُ وَدائِعُـه
Astawdi`ukumu ‘llāha ‘l-ladhi lā taḍī`u wadā'i`uh.

I place you in the trust of Allah, whose trust is never misplaced.

Reference:
Ahmad 2/403, Ibn Majah 2/943. See also Al-Albani, Sahih Ibn Majah 2/133.

Chapter: Supplication of the traveller for the resident