You may seek the services of an attorney.
You may also apply for a Domestic Violence Civil Protection Order (DVCPO) or a Dating Violence Civil Protection Order. You must come in person to the court and speak with the Domestic Violence Public Coordinator. The office is located in the lobby of 301 W Third Street, Second Floor, Dayton, Ohio. Filing hours are Monday through Friday from 8:30 to 11:30 am or 1:15 to 3:30 pm. The filing process is generally two hours long and you must attend a hearing the day you file. You must have the name, address, and Date of Birth (at minimum) of the party you wish to file against.
There is no cost to file for a protection order in the state of Ohio.