Saviour
Part of speech: noun
Definition: A mainly UK spelling of savior.
Example sentence: What Trump means for us is that we've won the first battle. At a minimum, he's a necessary course correction from the excesses of the social justice Left. At most, he's the saviour of the First and Second Amendments, protector of the Supreme Court, and champion of the little guy. In other words, just what America needed.
Rescuer
Part of speech: noun
Definition: a person who rescues someone or something