Lewis, who narrowly survived being caught by Stuart Binny in the third over, made good use of the reprieve to blast his way to 60 runs off 42 deliveries. His quick-fire knock included four boundaries and as many sixes.
Suryakumar, who also got an early let-off, being dropped by Krishna Gowtham off Dhawal Kulkarni early in the second over, went on to post a steady 38 off 31 deliveries.
Although the opening duo gave the hosts a strong platform for a big total, the rest of the Mumbai batsmen failed to capitalise.
The Rajasthan bowlers did well to bag five wickets over the next six overs to make a strong comeback. Jofra Archer was the most impressive of the bunch, giving away a mere 16 runs in his four overs while claiming the crucial wickets of Suryakumar and Rohit Sharma.
Fellow pacer Ben Stokes bowled well in the late stages to return figures of 2/26. Indian pacers Jaydev Unadkat and Dhawal Kulkarni also got a wicket each as Mumbai seemed in real danger of failing to cross the 150-run mark.
However, Hardik Pandya helped the hosts to a competitive total with a late charge, scoring 36 runs off 21 balls before holing out to Stokes in the penultimate ball of the innings.
(This story has not been edited by Business Standard staff and is auto-generated from a syndicated feed.)