Halacha: A husband’s obligation of Kibud Av V’Eim comes first before his obligation to his wife. A wife’s obligations to her husband comes first, before her obligation of Kibud Av V’Eim.
Source: Shulchan Aruch Yoreh Deah Siman 240:14, Pischei Teshuva Yoreh Deah 240:12, Shu”t Rav Akiva Eiger Siman 68, Shu”t Noda B’Yehuda Mahadura Tinyana Even HaEzer Siman 45 and Chazon Ish Even HaEzer Siman 47 Dibur Hamaschil HaTel