"Hero of our times" is a powerful phrase, often used to describe someone who accomplishes extraordinary feats in his/her lifetime. There are a number of synonyms one could use to convey the same sentiment, although they may carry slightly different connotations. For example, one could refer to someone as a "champion," which implies victory over challenging obstacles. "Savior" suggests someone who has saved lives or made a significant positive impact on a community. "Legend" implies that the person's accomplishments have become mythologized over time. "Role model" suggests that the person serves as a positive example to others. Ultimately, the choice of synonym depends on the context and the specific qualities being emphasized.