I am not sure if your brother filed five separate cases against you, five causes of action in a single case, or five complaints have been filed in one case. If it is the first, then the dismissal applies only to the particular case with the case number on it. If it is the second or the third, the dismissal applies to everything.
You really need to have an atty look at it for you. The quote you got was likely to make sure there was enough money to see the litigation through. In this instance, you need only "limited" representation or even less. What I mean is simply, you need someone to review the dismissal. I'm sure someone can do it for $500.00 or less.