Formal:
* Pazite na sebe! (pah-zee-tay nah seh-beh) - This is the most literal translation, meaning "Take care of yourself!"
* Čuvajte se! (choo-vah-y-tay seh) - This means "Take care!" and is slightly more formal than "Pazite na sebe!".
Informal:
* Čuvaj se! (choo-vahj seh) - This is the informal version of "Čuvajte se!", meaning "Take care!".
* Pozdrav! (po-zdrahv) - This means "Hello!" or "Goodbye!" and can also be used as a casual way to say "Take care!".
* Sve najbolje! (sveh nay-bol-yeh) - This means "All the best!" and is a common way to say goodbye and "Take care!".
The best way to choose which phrase to use depends on the situation and your relationship with the person you are talking to. If you are unsure, it's always best to err on the side of formality.