There's no real way to hedge against a crisis - almost by definition, everything goes down in a crisis. But as Buffet says, be greedy when others are fearful; if anything now is the time to spend what you put aside in good times, and make the cheap but risky investments that other people don't dare to. (E.g. I just booked a holiday for next year at a huge discount, which is good for me and good for the economy - I get a good deal, the airline and the hotel get a chance to stave off bankruptcy. Of course I'm taking the risk of the airline or the hotel going bankrupt)
Stop worrying and let it ride. Don't listen to anonymous people on the internet that tell you the sky is falling. Stock up on pasta and canned goods if it makes you feel better, but you don't have to worry, everything will almost certainly be fine.