boa viagem
viagem = trip, travel
Viagem (travel)
fique seguro
Viagens seguras
Tenha uma boa viagem (have a good trip) would be the most common.
"Bezpiecznej podróży!"
Turvallista matkaa!
Tenga un buen viaje de regreso is have a safe trip home in spanish.
khair nal jao
We don't say "safe journey" - well, not literally, anyway. Our equivalent is "good journey" (boa viagem)
ασφαλές ταξίδι [asfales taxeethi]
"Želáme Vám bezpečnú cestu"