it's none of my business
Ne me regarde pas comme ça, tu m'as très bien comprise.
Don’t look at me like that; you understood me perfectly well.
— Une journée particulière (1977)
Ne me regarde pas, gros tas de merde !
Don't look at me, you big pile of shit!
— The Strangers (2016)
Je me mêle de ce qui ne me regarde pas.
I stick my nose into things that don't concern me.
Ce que fait la signora Fiorini ne me regarde pas.
What Signora Fiorini does is none of my business.
— Vacances à Venise (1955)
Don't stare at me stupidly.