This is the 8043rd most frequent Russian word.
кризисного
"Crisis-related" or "pertaining to a crisis."
Here, "кризисного" is an adjective describing the noun "момента" (moment), specifying that the moment is associated with a crisis.
Человек справился с кризисного момента.
The person coped with the crisis moment.
In this case, "кризисного" modifies "вопроса" (issue), indicating that the issue pertains to a crisis.
Решение кризисного вопроса требует времени.
The resolution of the crisis issue requires time.
Here, "кризисного" describes "ситуации" (situation), contextualizing it as one related to a crisis.