Normally there is a idiom "throw a cat among pigeons" but what is being inquired here is "throwing a pigeon among cats" where cats are predator and pigeon is the prey and pigeon is trapped between the predator cats who are out to get at the drop of a hat.
Typically, an example of this would be a employee (the pigeon) working for more than 1 tyrant boss (predator) ideally for more than 4-5 toxic tyrant bosses (predators) helicoptering you, ripping you off of your negligible mistake, etc..
PS: Basically the boss here can be empty suit freeloaders