Boss and Me--Chinese drama where a CEO guy falls for a secretary, and does his darnest to woo her. She's that stubborn "I can do it myself type" (apparently) so she resists a little, but he's always trying to take care of her.
Faith--Korean drama where the captain of the king's guard goes into the future and kidnaps a female doctor to save the queen. He's very protective of her!
I Hear Your Voice--Kdrama, young man protects a lawyer against a crazy psychopath bent on killing her. This is a noona romance, and for me it took some getting used to but DAYYUUMMM he's cute. And protective.
Pinocchio--Similar to above but with reporters, and they are the same age
Queen In-Hyun's Man--Kdrama, guy from the past accidentally gets pulled into the future, and can kind of go back and forth. He doesn't have to protect the girl from a whole lot danger wise, but boy is he the most romantic, protective, hot stud of a character. LOVE their romance. Good kisses too.
My Love From the Stars--Obviously if you haven't seen this one yet, you have to. I find it unlikely that ANYONE hasn't seen this one, but just in case. Yes lots of protecting, and its fabulous.
I still have "Healer" hang over myself. That drama was fantabulous with all the protecting and stuff. Sigh. I might just have to watch it again since I don't think there are many comparable ones!