When biding farewell to someone going on a journey

When biding farewell to someone going on a journey, recite:

أَسْتَوْدِعُ اللَّهَ دِينَكَ وَأَمَانَتَكَ وَخَوَاتِيمَ عَمَلِكَ
“(I make) Allah responsible for your deen, your trustworthiness and for the results of your actions”.

(Tirmidhi)