prajāpatir aśaṅkata

rudranam-of the sons of Rudra; rudra-srstanam-who were generated by Rudra; samantat-being assembled together; grasatam-while devouring; jagat-the universe; nisamya-by observing their activities; asaṅkhyasah-unlimited; yuthan-assembly; praja-patih-the father of the living entities; asaṅkata-became afraid of.