तत्र there, विभ्राजता while illumining, तेन by Rama, सा सभा that assembly, विमलग्रहनक्षत्रा with clear planets and stars, शारदी autumnal, द्यौः sky, इन्दुना इव like moon, अभिव्यरोचत dazzled.

 That assembly was illumined by (the presence of) Rama like the Moon dazzling the clear autumnal sky bespangled with sparkling planets and stars.