Regd exemption for earning in india while being nri

priya (software engg) (25 Points)

11 July 2014  

I have worked in company say "ABC" India limited from 16-May-2011 to 21-Oct-2012, then they sent me to US on a project 
from 22-Oct-2012 to 15-Sept-2013(At this period, I was an employee of ABC US and I earned my salary and paid taxed in US.I was made to quit ABC India, and made an employee of ABC US)

Post project, I got back to India and again i rejoined ABC India on 16-Sept-2013 and have been working in India with then till date

When I file my returns now:
1.As per my knowledge all money I earner In US is tax exempted

2.There was a bonus(approx 1,00,000) credited to my indian Account in May 2013, is this bonus money totally  tax exempted as I was in US(NRI)at that period?  If so under which section is this exemption granted

or should i add it to my Indian earnings(earned from 16-Sept-2013) and pay taxes at 20 or 30% applicable to me?