tejāṁsy astrāyudhāni ca

atho-therefore; isa-O supreme controller; jahi-kill; tvastram-the demon Vrtrasura, son of Tvasta; grasantam-who is devouring; bhuvana-trayam-the three worlds; grastani-devoured; yena-by whom; nah-our; krsna-O Lord Krsna; tejamsi-all strength and prowess; astra-arrows; ayudhani-and other weapons; ca-also.