GOD'S WORD® Translation
Whenever people with evil spirits saw him, they would fall down in front of him and shout, "You are the Son of God!"

American Standard Version
And the unclean spirits, whensoever they beheld him, fell down before him, and cried, saying, Thou art the Son of God.

Berean Study Bible
And when the unclean spirits saw Him, they fell down before Him and cried out, “You are the Son of God!”

Douay-Rheims Bible
And the unclean spirits, when they saw him, fell down before him: and they cried, saying:

English Revised Version
And the unclean spirits, whensoever they beheld him, fell down before him, and cried, saying, Thou art the Son of God.

King James Bible
And unclean spirits, when they saw him, fell down before him, and cried, saying, Thou art the Son of God.

World English Bible
The unclean spirits, whenever they saw him, fell down before him, and cried, "You are the Son of God!"

Young's Literal Translation
and the unclean spirits, when they were seeing him, were falling down before him, and were crying, saying -- 'Thou art the Son of God;'

Mark 3:11 Additional Translations ...