saḥ - he; yācitaḥ - requested; sura-gaṇaiḥ - by the demigods; indra-ādyaiḥ - headed by Lord Indra; ātma - their own; rakṣaṇe - for protection; asurebhyaḥ - of the demons; paritrastaiḥ - who were terrified; tat - their; rakṣām - protection; saḥ - he; akarot - carried out; ciram - for a long time.

Begged by Indra and the other demigods to help protect them when they were terrorized by the demons, Mucukunda defended them for a long time.