How would you respond to this?

So, I decided that things are over and right now I am just putting together money and a plan. Saving up money to pay a lawyer and planning out what my life will look like when I am on my own. My husband and I live like roommates anyway, so it is easy enough to avoid him over the next couple of months. But even roommates need to talk about household things once in a while. So, a few days ago D offered to drive me to work and as I was getting ready to go, I asked him about doing laundry. I've been doing all of the laundry and said I would appreciate it if he could help me out by doing his. I even began the conversation by saying that I do not always communicate my needs very well, but I am trying to work on that. He said,"Will you shut the hell up!" Wow. I never speak to him that way. I never curse at him and rarely raise my voice. I looked at him and something a friend of mine said popped into my head. He said that when everyone is loud and yelling at each other, the quietest person in the room is the most powerful. I thought of that and just looked at him and let my anger pass. So many things I wanted to say. "That's it, I am finished with this. Pack up your stuff." or" Thank you for making this easier for me." Here I am, walking around worrying about how the divorce is going to hit him emotionally and financially and he talks to me like that. History has a way of repeating itself, so something like that will probably happen again. How would you respond in that situation? I gave it a minute, grabbed my stuff and said I was ready to go to work. Six months ago I would have cried. Now I just swallow it and picture my life six months from now.