Emphasizing "home":
* E hoʻi koke i ka home, a palekana. (Literally: "Return quickly to home, and safely.")
* E hoʻi koke i ka home, a maikaʻi. (Literally: "Return quickly to home, and well.")
Emphasizing "soon":
* E hoʻi koke i ka home, a palekana. (Same as above, but emphasizes quick return)
* E hoʻi koke i ka home. (Literally: "Return quickly to home.")
Emphasizing "safely":
* E palekana i kou hoʻi ʻana i ka home. (Literally: "Be safe in your return to home.")
* E palekana i kou hele ʻana. (Literally: "Be safe in your journey.")
Combining elements:
* E hoʻi koke i ka home me ka palekana. (Literally: "Return quickly to home with safety.")
Informal:
* E hoʻi koke! E mālama. (Literally: "Return quickly! Take care.")
The best option for you will depend on the context and your relationship with the person you are speaking to. Remember, even if you don't use a perfect phrase, the sentiment of caring for their well-being will be understood.