I missed this story in the Wall Street Journal a few days ago. It is worth reading:
Stories of saints or relics and sacred objects surviving fires and other destructions are legion across the Christian West. Hagiography accounts tell of saints who walked away from torture by fire, and relics are described as saving buildings around them. When the Chambery Chapel in Savoy, which then housed the Shroud of Turin, burned down, the shroud itself emerged with only slight scorching.