And+with+the+brands+fire+the+traitors'+houses.

And With The Brands Fire The Traitors' Houses

And use the brands to set the traitors' houses on fire is what First Plebein is referring to. He is saying they will use the brands of Caesar to burn the houses of those who were all in to kill him.

No Fear Shakespeare. 2011. November 21 2011. http://nfs.sparknotes.com/juliuscaesar/page_146.html