Pretty much all automatic cars have a "gear" or setting for engine breaking. Even my Prius with a CVT has it: a separate button for Park, then you "shift" to put the car in Drive, Neutral, Reverse, or B for engine Braking. I don't think I've ever needed to use it, but it's there.

Automatics that don't have a CVT may not have a dedicated Engine Braking setting but they should have a forced 1st, 2nd, and/or 3rd gear (or Low and High which is 2nd or 3rd). The computer is locked so that it won't shift higher, which you can use to engine brake.

Finally, there are the "semiautomatic" cars or automatic with a semi setting, where you can "shift" like you're in a manual but the computer and automatic transmission does the actual physical shifting of the gears; they just do the shifting when you say to rather than when the computer wants to.