On the ground he scored a Test century last month, O'Brien claimed another two wickets with the ball - Rohit Sharma, for a two-ball duck, and Raina, for 69 - before Manish Pandey and Hardik Pandya took India well past 200.
After thrashing Ireland in the 1st T20I, Team India is all set to face the Irish side in the final and T20I at Dublin.
Perhaps it was a marker of this crucial impending assignment that India chose to stay on and practice in London on Monday. The Ireland series are a vital one for India as they will look to adapt to overseas conditions and hope to get their winning combination right before the big test starting July.
Kohli was dismissed cheaply for 9 by Peter Chase, but Rahul's continued his form, scoring a fine 70 off just 36 balls - in an innings which included six sixes and three boundaries.
Ireland will return to action in August when they host Afghanistan in three T20Is and three ODIs in August, with India now off to Old Trafford for Tuesday's first Twenty20 global against England, live on Sky Sports Cricket (channel 404) and Sky Sports Main Event (401) from 5pm. With Jasprit Bumrah injuring his thumb during the first T20I, Kohli might be tempted to give the pacer a rest and bring in either Umesh or uncapped Siddharth Kaul.
Predicted playing XI: Kohli (c) Rohit, Dhawan, Rahul, Raina, Dhoni (wk), Pandya, Kuldeep, Chahal, Umesh, Kaul.
Sony Six and Sony Six HD will provide live television coverage of the match in India. Meanwhile, 31-year-old Punjab-born off-spinner Simranjit Singh will enjoy the spotlight of playing against his erstwhile nation.
Time: Ireland vs India, 2nd T20I will begin at 8:30 pm (IST).
Ireland captain Gary Wilson announced that top-order batsman William Porterfield returned in the place of wicketkeeper Stuart Poynter.