If you decide to use the Hirz based on traditional practice (and after consulting a scholar), the usual method is:
Hirz e Abu Dujana is a famous spiritual letter traditionally used for protection against Jinn, shayateen (devils), and other supernatural disturbances. While highly regarded in certain spiritual circles, its historical authenticity is a subject of significant debate among Islamic scholars. 1. Historical Context hirz e abu dujana pdf full