For your story, first of all make Ansteyg and Rabelais happy by doing a search-and-replace on "meteor", changing it to "meteorite" throughout...
Then, if your meteorite is big enough to do serious damage, your hero needs to be a very good distance away from it. Underground nearby will not do unless it's a little one -- a big crater might be half a mile deep, and there will be enormous shocks through both the ground and air, and flash-ignition of vegetation and buildings over a wide area.
Your best bet would be to be somewhere else altogether -- and not too near the sea either, as the shocks are likely to make or trigger large tsunami over a lot of the world.
Another thought to consider... Some people are suggesting developing rockets and hydrogen bombs all ready to repel any dangerous asteroids. Jolly fine idea -- but we might have to wait hundreds or even thousands of years for a real threat to appear. Whom could we trust with such weaponry for that long? (I know -- Dubya!)
I think this "cure" is probably more far more risky than any likely meteorite strike. Am I cynical to think it's really to give all the unemployed nuclear and rocket engineers something to do after the Cold War?