You did not indicate any time frame so it is impossible to speculate as to when the ruling/dismissal was entered. It is never prudent to allow any motion to go forward without filing an opposition thereto. A dismissal with prejudice ends the case. You should contact a local litigation lawyer to review the pleadings to determine both the nature of the dismissal and whether or not you can file a motion for reconsideration and/or an appeal of the ruling. You can run a "Find a Lawyer" search here on Avvo to locate lawyers in your jurisdiction.
I agree with my colleague that you need a lawyer to help you with this matter. You may be able to file a motion tore consider or to set aside the dismissal, but there is not enough information in your question to be certain.
It sounds like you failed to file a written opposition to the defendant's motion to dismiss and that is why the court dismissed the case. You should consult with an attorney immediately as the time to file any appeal is very short from the date that the dismissal is entered as a final judgment.
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