If I'm flying Dodanna's Pride and I roll a blue crit do I cancel the attack before or after defence tokens?

After. All crit effects are declared and resolved immediately after defense tokens are spent.

long story short... they are spent before you resolve the CRIT... however they might not be resolved at the same step...

Yep basically

1.) Roll

2.)Modify dice (reroll/ add dice etc.)

3.)defender picks defense tokens (evade is resolved immediately)

4.) Critical is selected and resolved (Doddona's pride happens here)

5.) Apply damage (brace/redirect happens here)

OK thanks.

So if I roll a hit and a crit my opponent could spend a brace to reduce it to one damage then decide to spend a redirect. I then cancel the attack and he draws a face up damage meaning he just wasted his defence tokens?

Just now, Vetnor said:

OK thanks.

So if I roll a hit and a crit my opponent could spend a brace to reduce it to one damage then decide to spend a redirect. I then cancel the attack and he draws a face up damage meaning he just wasted his defence tokens?

Essentially.

or if you roll 4 damage and he thinks you’re just going to draw a face up and spends nothing, so you just nominate the default Crit and deal 4 damage instead...