Add the tomatoes, reserved marinade, cream cheese, red pepper flakes if using and 1 tablespoon of the basil to same skillet; cook and stir 3 minutes until well blended.
06Add the shrimp; cook until heated through, stirring occasionally.
07Place the hot fettuccine on a large serving platter; top with shrimp mixture, sprinkle with remaining basil and grate cheese over all.