I have done no more to Caesar than you shall do(=would have done) to Brutus.(by Shakespeare)
ask:1.shall do=would have done?
2.What's the meaning of the sentence?
"shall do" is the same as "will do". It is the future tense. In Shakespeare's day there was a slight difference in the meanings of "will" and "shall", but that difference has disappeared. "Shall" is slightly archaic now.