Casual — to friend
Emergency
助けて! — Please help me! (Emergency, Casual — to friend, JLPT N5)
You
助けて!
たすけて!
Please help me!
Romaji: Tasukete! / Reply Romaji: Doushita no!? Nani ga atta ka oshiete!
Reply
どうしたの!?何があったか教えて!
どうしたの!?なにがあったかおしえて!
What happened!? Tell me what's wrong!
Gesture & etiquette
Look directly at the person with a worried expression, grab their shoulders slightly to focus them, or pull out a phone to call for emergency services.
Do not panic or freeze; try to maintain a clear line of communication to get help quickly.