If I want to marry my Filipina girlfriend in Israel, what papers do I need to file?

The laws of Israel (not U.S. immigration laws) would dictate needed papers and procedures for a wedding to be conducted there. With extremely limited exceptions, a wedding recognized as valid where the wedding took place will be recognized as valid for U.S. immigration application legal purposes. It would be wise for you and your fianc?e to consult with a U.S. immigration attorney who, after learning all of the relevant details about you and your fianc?e, could advise you about immigration-related eligibilities, options and strategies. Some immigration law firms, including mine, offer legal services on a "flat fee" basis so that a client will know the total expense from the very beginning, and a few immigration law firms, including mine, offer an initial consultation free of charge. [Note: This communication is intended as general information and not specific legal advice, and this communication does not create an attorney-client relationship.]

You will have to check with the Israeli authorities.