महता great, रणकर्मणा in the task of battle, तव your, श्रमम् strenuous work, अवगच्छामि took cognizance of, ते your, वीर्यसौमुख्यम् valiance, प्रकर्षंवा or superiority, नोपधारये no exhibition

"Great Ravana! After the strenuous task in the battle, there was no exhibition of your valour, and I did not cognize any superiority in your action."