* നന്നായിരിക്കുക (Nannaayirikkuka) - This means "be well" and is a common way to say goodbye.
* ശ്രദ്ധിക്കുക (Shraddhikkuka) - This means "be careful" and is often used in situations where someone is going somewhere dangerous.
* സുരക്ഷിതമായിരിക്കുക (Surakshithamaayirikkuka) - This means "be safe" and is used in situations where someone is traveling or going to a potentially dangerous place.
The best way to say "Take care" in Malayalam will depend on the specific situation and your relationship with the person you are speaking to.