As far as I know the interpretation of the verses of Revelation 13 is not directly written in Baha'i Scriptures. I will give you my take on it, based on similar interpretations given by Abdulbaha and Bible in Daniel 8.
In Revelation 13, prophecies describe two beasts using symbols. The first beast looks like a leopard, and his feet were as the feet of a bear, and his mouth as the mouth of lion.
This beast denotes the rise of false Islam, and specially related to Caliphs within the Sunni Islam. Looking like a leopard with feet like bear and mouth like lion, denotes that these dominions outwardly is aggressive and powerful, and appears to have religious authority like the Lion, being symbol of the Prophet of God.
The second beast, looks like a Lamb with two horns. The Lamb is the symbol of chosen Ones of God who sacrifice in the path of God. Within Shia Islam, all the Imams were Martyred and specially Imam Hossein's head was cut. This beast represent the Rise of false Shia Islam in Persia, who outwardly considered and pretended to be like the Wronged ones, and followers of the Imams of Shia, who were the symbols of sacrifice.
Safavid conversion of Iran to Shia Islam - Wikipedia
The two horns represents the kingdoms and dominions of Media and Persia, similar to Daniel 8. This is where the false Shia Islam came to power.
The only difference is, the Ram with two horns in Daniel 8 is changed with the Lamb, but he speaks like the first beast, meaning outwardly it looks like following the Wronged Ones of God, yet in reality, is speaking against the teachings of religion of God.
Now, the number of the beast, being 666 denotes 666 years after Christ, the rise of Muawiyah.
The Lamb makes everyone worship the Image of this beast. By 'image of beast', is meant the attributes of him; selfishness, cruelty and worldly. And in reality these are the attributes that the false Shia Islam promoted.