Valmiki Ramayana Yuddha Kanda Sarga 120 Shloka 28
Original Shlokaसीतालक्ष्मीर्भवान् विष्णुर्देवःकृष्णःप्रजापतिः ।।6.120.28।। वधार्थंरावणस्येहप्रविष्टोमानुषींतनुम् ।
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सीता Sita, लक्ष्मीः Lakshmi, भवान् you, देवः god, कृष्णःKrishna, प्रजापतिः Lord, विष्णुः Vishnu, रावणस्य Ravana's, वधार्थम् in order to put an end, इह here, मानुषम् mortal, तनुम् body, प्रविष्टः entered
"Sita is goddess Lakshmi while you are Vishnu. You are Krishna. You are the Lord of created beings. In order to put an end to Ravana, you entered the mortal body on earth."