Picard: I'm about to commit a direct violation of our orders. Any of you who wish to object should do so now. It will be noted in my log. Data: Captain... I believe I speak for everyone here, sir, when I say......to hell with our orders.
Picard informing the crew that given the attack he now wants to join the battle, and lets them know he is about to commit a direct violation of their orders. He offers the crew the chance to object which he will note in his log. Data responds, stating he believes to be speaking for everyone, "to hell with our orders."