Valmiki Ramayana Aranya Kanda Sarga 49 Shloka 5

एवम् in that manner, उक्तवतः as he spoke, क्रुद्धस्य full of anger, तस्य his, सूर्यकल्पे almost like the Sun, शिखिप्रभे radiance of flaming fire, हरिपर्यन्ते ambercoloured at the corners, नेत्रे eyes, रक्ते red, बभुवतुः became.

As Ravana exploded in anger, his ambercoloured eyes turned red like the radiance of the flaming fire, and almost as bright as the Sun.