Jamie Overton's 5-wicket haul does the job for Somerset.
Evans was the star of the game.
With a win here, Lancashire will now progress to the semifinals of the tournament.
Moeen Ali was the star of the day for his team.
He ended the game with the figures of 1/18.
Both the encounters on the day were one-sided.
Leicestershire defended the middling total of 155 runs and won the thriller by just 5 runs.
There were some unbelievable individual performances on this day.
Finch, Stirling and Nabi were the stars of the day.
The 23-year-old kept his nerves under immense pressure.