[Zele]

Intersting question. He anticipates that you're calling down, so he's going to play nearly perfectly against you if you do (although if the river bricks your hand is probably on the high end of his range for you, so you might "induce a value bet" from a hand you can beat some fraction of the time). So to thwart this, you have to do something different than call down.

Donking does have its merits - he's unlikely to semibluff raise you since that would be spewing against your image, and he'll probably call down with AK or AT UI - but I think I prefer check/call - check/fold (or bet river bricks if he checks through the turn). Sometimes you'll be folding the best hand to a ballsy AK vb, but he's less likely than normal to try to bluff you on both streets.

EDIT: Given your image, if he takes a free card, he's almost definitely calling a river bet UI. And you'll be able to tell if you want to bet the river, so I'm not so worried about a free card.