What if husband wants to watch pornography videos while sex but wife knows it's haram and deny to watch it? Am i obliged to obey him in wrong doings?

My husbnd wants us to watch pornography videos during sex. I personally dont like it. It feels me that he has more interest in those videos than me . What should i do now? Am i obliged to obey him in this matter? To protect my marriage? Please enlighten me on this issue in the light of islam. Thank you