Dua for the traveller — said by those staying behind
زَوَّدَكَ اللهُ التَّقوى، وَغَفَرَ ذَنبَك، وَيَسَّرَ...
زَوَّدَكَ اللهُ التَّقوى، وَغَفَرَ ذَنبَك، وَيَسَّرَ لَكَ الخَيرَ حَيثُما كُنت
Zawwadakal-lahu at-taqwa waghafara thanbak, wayassara lakal-khayra haythuma kunt
Translation
May Allah provide you with piety, forgive your sins and make goodness easy for you wherever you are.
When to recite
Said to a traveller when bidding farewell to them.
Source / Reference
At-Tirmithi 5/499