To preserve an manuscript from dangers of disasters, bacteria, fungi, animals and man, find a place which is free of them, as Atakama desert, hidden chambers of Egiptian pyramids, Anarctica, or Greenland ice sheet, Crystal Cave of Giants in Naica, Mexico. There is more chance to survive of such valuable documents in any form.

There would be good idea also to encapsulate it inside a clay container with mummification specifics to. Such containers in Egipt preserve i.e cats with inscriptions written on papyrus.

Hide safely in distant place and inside disinfected contained.

To preserve an manuscript from dangers of disasters, bacteria, fungi, animals and man, find a place which is free of them in desired time period, as Atakama desert, hidden chambers of Egiptian pyramids, Anarctica, or Greenland ice sheet, Crystal Cave of Giants in Naica, Mexico. 

There is more chance to survive of such valuable documents in any form if properly hidden.

There would be good idea also to encapsulate it inside a clay container with mummification specifics to. Such containers in Egipt preserve i.e cats with inscriptions written on papyrus.

"A thought is stronger than object". So it can be another, completely opposite way to preserve such manuscript from being damaged. Make it saint and valuable religion object. Such will be handled by special holy law.