Horrific story, I’m so sorry to hear you went through that.
For others who may try to go through in the future: Don’t give them any more information than you absolutely have to. Nothing concrete. Try to be as vague as possible. Don’t mention “Palestine.” Just lie and say you’re going to be a tourist in Israel.
They will use ANYTHING you say against you. So don’t give them anything you don’t absolutely have to give them. Also, make sure any electronics are “clean” of anything you don’t want them to find, and have an extra fake email and/or Facebook account set up if they try to get you to log in to them.
Remember: You don’t owe them anything. They are there illegitimately. Don’t feel bad for lying.
Of course, I hate lying, and it gives me digestive distress for days. It reminds me of a passage I read in The Unbearable Lightness of Being:
Not until that point did Tomas realize that he was under interrogation. All at once he saw that his every word could put someone in danger. Although he obviously knew the name of the editor in question, he denied it: “I’m not sure.”
“Now, now,” said the man in a voice dripping with indignation over Tomas’s insincerity, “you can’t tell me he didn’t introduce himself!”
It is a tragicomic fact that our proper upbringing has become an ally of the secret police. We do not know how to lie. The “Tell the truth!” imperative drummed into us by our mamas and papas functions so automatically that we feel ashamed of lying even to a secret policeman during an interrogation. It is simpler for us to argue with him or insult him (which makes no sense whatsoever) than to lie to his face (which is the only thing to do).