rendíthetetlenül ellenez означает в английский

set one's face like a flint against (something)▼verb
[UK: set wʌnz feɪs ˈlaɪk ə flɪnt ə.ˈɡenst ˈsʌm.θɪŋ] [US: ˈset wʌnz ˈfeɪs ˈlaɪk ə ˈflɪnt ə.ˈɡenst ˈsʌm.θɪŋ]