Valmiki Ramayana 6.91.24

दर्शयामास च तदा रावणिं रघुनन्दनः।असम्भ्रान्तो महातेजास्तदद्भुतमिवाभवत्॥

darśayāmāsa ca tadā rāvaṇiṃ raghunandanaḥ |asambhrānto mahātejāstadadbhutamivābhavat ||

Our plain-language meaning of this verse is waiting for scholar review.