dhruve - against Dhruva; prayuktām - inflicted; asuraiḥ - by the demons; tām - that; māyām - mystic power; ati-dustarām - very dangerous; niśamya - after hearing; tasya - his; munayaḥ - the great sages; śam - good fortune; āśaṁsan - giving encouragement for; samāgatāḥ - assembled.

When the great sages heard that Dhruva Mahārāja was overpowered by the illusory mystic tricks of the demons, they immediately assembled to offer him auspicious encouragement.