Zev’s passport was at the monkey Roadblock
Zev and Justin were eliminated because of Zev’s lost passport, but his passport wasn’t lost after all.
On Elimination Station, which follows the teams after they’ve been eliminated from the race, Zev and Justin go to the U.S. embassy which has Zev’s passport waiting for him. (It’s a little suspicious that the consulate just has it on the counter and have no problem with the camera crew walking in with Zev and Justin; I think a producer probably pre-visited the embassy.)
Anyway, Justin explains that before doing the Roadblock, they mistakenly went inside a temple “because we misread the clue.” To see where they were going, he pulled out a light from his bag, and Zev’s passport fell out. Justin says, “I’m sick to my stomach. Now I’m pretty sure it’s my fault.”
To see what happened, skip ahead to 2:45 so you don’t have to suffer through the inane footage of the first two eliminated teams: