Valmiki Ramayana Yuddha Kanda Sarga 80 Shloka 25

सःhe, सभःsky, प्रच्छादयन् obscured, धूमान्धकारम् darkness through smoke, चक्रे did, श्रीमान् glorious, नीहारतमसाdarkness through fog, वृताःsurrounded, दिशश्च directions, अन्तर्दधे invisible

The glorious Indrajith obscured the sky by making it dark through smoke and fog and made the surrounding directions invisible.