यदा like that, शस्त्रम् missiles, नारेभे not started, शरासनम् arrows, न चकर्ष not able to stretch bow, विक्लबेन confused, अन्तरात्मना mentally, अस्य his, वीर्यम् valiance, न प्रत्यकरोत् not oppose

Being confused mentally, Ravana did not start his arrows, nor stretch his bow, nor was able to use missiles and was not able to oppose Rama's valour.