If you are realistically in a situation where that would happen, and you would be harmed, they may just decide to kill you as you're no longer of any value.
In this case, a blank phone probably means no entry and not actually harming you. So, there's that, I guess.
If you are under the threat of violence that won't save you.
But maybe death is preferable to living with your anime collection out there.
I'm calling Poe's law here. I hope you do not serious mean that anime collections are shameful.
s/anime/youknow/ aka Rule34.
better yet, a pass code option to show a bare user account without access to the real user data