I was going to offer some advice, but it's honestly been so wrong since I fought Rom that I actually don't remember whether it was better to take out the ads asap, or just try to ignore them. What I can say however is: A. Keep moving. Don't stand in one place for very long. Don't get greedy. It's better to land one hit and live than to land three and die. B. I remember Tonitrus being very good for that fight if you have the stats/upgrade materials.