संयुगे in battle, शत्रोः enemy, निधनकाङ्क्षिणः desirous of destruction, रामस्य Rama's, वीर्यम् valiance, बलम् strength, हर्षश्च enthusiasm, अस्त्रबलंचैव and strength of missiles, द्विगुणम् doubled, बभूव became

The strength, valiance, enthusiasm, and the strength of missiles of Rama, who was desirous of the destruction of the enemy, doubled.