Dear Laxmi,
This is fantastic! " It is not easy at all for any startup to pass through the tough grilling that a banking group of this large size puts one into, but, we crossed their rigid scrutiny with sheer guts, transparency and confidence". Considering the allegations posted here by some very negative posters I guess you must feel enormous relief to have weathered the scrutiny by that banking group. We seem to be out of the woods not to use a well-known phrase in English.