Valmiki Ramayana Yuddha Kanda Sarga 100 Shloka 27

रौद्रयोः frightening forms, सायकमुचोः discharging arrows on one another, यमान्तकनिकाशयोः like god of death and god of retribution, तयोः both, युगपत् at the end of universe, सम्प्रयुध्यतोः fighting simultaneously, भूतानि created beings, वित्रेसुः frightened

Just as created beings fight at the end of the dissolution of the universe, like God of death and God of retribution, both were fighting discharging arrows which was frightening to all beings.