You'd need a resolver that was provided by a foreign organization, preferably a non-profit, with no business interests in your country whatsoever, so that your government had nothing to threaten them with if they didn't comply with the order.

Such a resolver would also need to be the default shipped with at least one major browser, such that blocking it would essentially mean "turning off the internet" for some users.

Then the pressure would move to forcing browsers to use a different DNS resolver, and the game would continue.