Those who do not submit will be consumed."

Ezuri's Predation

For each creature your opponents control, create a 4/4 green Phyrexian Beast creature token. Each of those tokens fights a different one of those creatures.

"Slaughter the weak ones. They are unworthy of the gift of *compleation.*"

Duskmourn: House of Horror Commander

Commander Masters

"Those who do not submit will be consumed."

Commander Legends: Battle for Baldur's Gate

Each of the "fights" happens at the same time.

If Ezuri's Predation creates more than one token for any given creature (due to an effect such as the one Doubling Season creates), the extra tokens won't fight any creature.

Players can't cast spells or activate any abilities in between the Beasts entering the battlefield and fighting the other creatures. If the Beasts entering the battlefield cause any abilities to trigger, those abilities will be put onto the stack after Ezuri's Predation is finished resolving.

You choose which Beast is fighting which creature an opponent controls.