Used to qualify nouns with the sense ‘resembling a martyr; self-sacrificing’
He fixed the audience with a martyr-like gaze, as though enduring great hardship for their sake.
Он посмотрел на публику мученическим взглядом, будто терпел большие лишения ради них.
Used adverbially after verbs to mean ‘in a martyr-like manner’
She accepted the extra work martyr-like, without a word of complaint.
Она мученически приняла дополнительную работу, не сказав ни слова.