I think you can assume that anything on your person will be taken. Funds and property with a clear paper trail may or may not be grabbed. There are various ways to keep money anonymously, like numbered bank accounts and cryptocurrencies, but they are not simple or without their problems.

If you have anyone you really trust, who is not likely to also end up in a camp, you might consider transferring everything to them. It would be difficult for the government to take anything that does not actually belong to you.

Ideally, I would consult with both a lawyer and a financial consultant.