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The opponent had an Optimus Prime - Battlefield Legend with an Anticipation Engine and attacked my Ramhorn. I had a Force Field in hand and was ready to play my white armor, when he flipped a Security Checkpoint with Anticipation Engine. Do I still get to play the Force Field in this situation or does the Checkpoint get rid of the Force Field before I play it?

Because attack triggers will resolve before defense triggers, in this scenario Security Checkpoint will get rid of your Force Field before you can play it.
Source: Wizards of the Coast (2019-09-20)    【Link to Ruling】
Tags: Triggers