Guys, what are some signs a guy feels protective of you, even if you aren't dating?

I still don't know if this guy I like actually has feelings for me or not, it's hard to read him. So I wanted to know if there's anything a guy would subtly or unconsciously do to be protective of you when you aren't dating but he has feelings for you.
Guys, what are some signs a guy feels protective of you, even if you aren't dating?
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