yadyapy astram brahma-siras
yadyapi-although; astram-weapons; brahma-Brahma; sirah-supreme; tu-but; amogham-without check; ca-and; apratikriyam-not to be counteracted; vaisnavam-in relation with Visnu; tejah-strength; asadya-being confronted with; samasamyat-was neutralized; bhrgudvaha-O glory of the family of Bhrgu.