इति: this, परुषम् harsh, वाक्यम् words, उक्तः having spoken, न्यायवादी: one who is just in argument, विभीषणः Vibheeshana, गदापाणिः wielding the mace, चतुर्भिः with four, राक्षसैःसह: accompanied by Rakshasas, उत्पपात: rose up.

Vibheeshana who was just in his argument rose up, wielding mace in hand accompanied by the four Rakshasas, when Ravana had spoken such harsh words to him.