Valmiki Ramayana Yuddha Kanda Sarga 98 Shloka 2
Original Shlokaस्वबलस्यविघातेनविरूपाक्ष्वधेन च । बभूवद्विगुणंक्रुद्धोरावणोराक्षसाधिपः ।।6.98.2।।
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राक्षसाधिपः Lord of Rakshasas, रावणः Ravana, स्वबलस्य his army, घातेन destruction, विरूपाक्ष्वधेन च fall of Virupaksha, द्विगुणम् doubly, क्रुद्धः angry, बभूव became
The Lord of Rakshasas, Ravana, became doubly angry by the destruction of his army and fall of Virupaksha.