I find triple tap rockets much more of a pain on non-dodge classes, especially when my Graal can't reach the troopers through their cover.
Rockets can be dodged, either by dodging or side stepping.
non dodge kits have a slight increase of speed when using light melee. I do it with Krogan and Turians.
This ensures the dodging of Ravagers/Rocket Troopers/Scions. (Scions have an increased AoE so you will need to light melee and sidestep in a straight line in order to dodge all 3 attacks, the others can be interchangeable in direction.)
Batarians have the gift of naturally fast movement speed so they can just sidestep without any trouble.