Which of these phrases from the passage contains a metaphor?
My lieutenant general shall be in my stead.
I myself will take up arms;. but I have the heart of a king.
to which, rather than any dishonor should grow by me
The correct answer is: I myself will take up arms; but I have the heart of a king.
A metaphor makes an indirect comparison of person, place, or thing. In this sentence, he likened himself as to having the heart of a king. So this phrase contains a metaphor.