The 28-year-old Siraj, a right-arm pacer, has so far played in five T20Is and picked up five wickets from them.
In the third match, India scored a 5-wicket win to clinch the three-match series 2-1.
Siraj had a memorable debut as he claimed 3/37 in the second innings to help India to an eight-wicket win against Australia.
Siraj, who was retained by Royal Challengers Bangalore along with Australia's Glenn Maxwell and former captain Virat Kohli ahead of the mega auction, said in an RCB podcast on Friday that the IPL had given him fame.
Siraj went off late in the day after pulling up in his delivery stride with a suspected hamstring injury.
During the first session of the third day's play in the second Test at Lord's, fans had thrown bottle corks at Indian opener K L Rahul.
K L Rahul could partner Rohit Sharma at the top of the order in the first Test which begins on Wednesday.
Siraj said captain Virat Kohli, also his skipper at Royal Challengers Bangalore, and bowling coach Bharat Arun besides Shastri, supported him after his father's death on November 20.
Both Siraj and Kuldeep were not selected for the ongoing first Test against England.
Cricket Australia launched an investigation with New South Wales Police after Siraj complained of hearing racist slurs while fielding near the boundary rope during the third Test at Sydney.