Valmiki Ramayana Yuddha Kanda Sarga 69 Shloka 7
Original Shlokaशम्बरोदेवराजेननरकोविष्णुवायथा । तथाऽद्यशयितारामोमयायुधिनिपातितः ।।6.69.7।।
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शम्बरः Sambara, देवराजेन Lord of Devas, नरकः Naraka, विष्णुना like Vishnu, यथा that way, तथा in the same manner, मया by me, अद्य struck, युधि in combat, निपातितः destroyed, रामः Rama, शयिता throw down.
"Just as Lord of Devas by Sambara, and Vishnu by Naraka, in the same way Rama will also be destroyed struck by me."