Valmiki Ramayana Sundara Kanda Sarga 42 Shloka 22
Original Shlokaराक्षसीनां वचश्त्रुत्वा रावणो राक्षसेश्वरः। हुताग्निरिव जज्वाल कोपसंवर्तितेक्षणः।।5.42.22।।
1 source checked for this shloka
राक्षसेश्वरः lord of ogres, रावणः Ravana, राक्षसीनाम् shedemons, वचः words, श्रुत्वा after hearing, कोपसंवर्तितेक्षणः his eyeballs rolling in anger, हुताग्निरिव like sacrificial fire into which offering is made,जज्वाल flared.
On listening to the report of the ogresses, Ravana, the lord of demons flared up like blazing flame of a sacrificial fire, his eyeballs rolling in rage.