Revelation 11:5

An Understandable Version (2005 edition)

And if anyone wants to harm them, fire will come out of their mouths and consume their enemies. And if anyone tries to harm them, he must be killed in the same way.

Cross References

Revelation 13:13

And he [i.e., this second beast] performs great [miraculous] signs, including making fire come down from heaven to earth in [full] view of people.

Revelation 9:17

And this is how the horses and their riders looked in the vision: They had on their chests fire [-red], [smoke-] blue and sulfur [-yellow] armor plate and the horses’ heads were like lions’ heads. And fire, smoke and sulfur proceeded out of their mouths.