set upon
Advanced (C1)formal
To suddenly attack someone — usually more than one person attacking at once.
"The tourists were set upon by a group of thieves in a dark alleyway."
Hear it in context

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Life of Tom · 40:35
But folks, the night has set upon Manchester.

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RobWords · 8:47
The three men “did piratically and feloniously set upon,

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Scott Hanselman · 26:19
That seems to be one of these generally set upon

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Kings and Generals · 6:23
the Mughal Empire was set upon its final crossroad of destiny.

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Wizards and Warriors · 70:29
However, they were set upon by another native group- Tusken Raiders