All my retirement is already out of the Euro (as nearly so as to be total, anyway). I moved it to other sectors about 6 months ago. If you haven’t done so yet, you might want to think about it. There is no safe haven anywhere, but you can minimize the damage to your portfolio by being elsewhere with your money. Yer still gonna take a hit of the Euro melts down, but a much lesser hit if you don’t own any Euro investments.
Best is, of course, to buy gold, but it is harder to store and that scenario may not work if your money is tied up in a 401K or an IRA. But you can do a lot of good for yourself by careful placement of you money away from Europe and it’s associated funds.
But if you haven’t looked at your investments lately, you might want to think about it. You should be doing a review every 6 months anyway, but now might be a good time to review.