No, only the court can stop a suit. If your ex wife sues you, you have limited options. You should seek legal advice from an attorney to decide which option is best. First you may have a basis for a Motion to Dismiss or for a Motion for Judgment on the Pleadings. Second, if you cannot get the court to dismiss, you must answer the suit. If you do not, the judge can and likely will rule in her favor. If the decree requires you to mediate any dispute before going to court, you can ask the court for an order compelling mediation. Also, if you have a claim that she has not paid her share of the debts, you must bring that to the court in an enforcement motion. However, you only need to do this if the creditor is coming against you or if her noncompliance is affecting your credit. Click on my blog “Mediation Tips” below for further information.