Mandalorians quickly figured out that Jedi mostly view blaster fire as "fun lightsaber practice".

During the Mando-Jedi wars, they dealt with this is a characteristically practical fashion; they used slugthrowers (aka ordinary firearms) instead, because if a Jedi tries to deflect a regular bullet, what happens is "a bunch of bullet shrapnel to the Jedi's face".

Jedi or Sith: [deflects blaster fire]

Mandalorian: [pulls out a shotgun] Deflect this you wizard bitch

Everyone: You can't beat the Jedi, they'll just deflect your blasters

Mandalorians, loading their slugthrowers: Shame

(I found this on Pinterest)