factory reset of a Huawei Ascend H881C
You can first try to do this :
Go to setting > manage application> google playstore > clear data

if that wont stop your problem,

you can download BackUp apps from many other sites on line.
try 1mobile market or MoboMarket etc.

If your phone is rooted, try titanium backup
http://www.papktop.com/titanium-backup-%e2%98%85-root-5-5-0-1.html

You need to enable 'Unknown Sources' in Setting > Security tab in order to install apps not from play store.