It seems to be a combination of Latin words:
* volo: I wish, I want
* sic: thus, so
* jubo: I order, I command
* Luther: (likely referring to Martin Luther)
* usitatem: usage, custom
Possible interpretations:
* "I wish it to be so, I command it, according to Luther's usage."
* "I want it this way, I order it, as Luther would have it."
Without further context, it is difficult to provide a definitive translation.
It's possible the phrase is a made-up quote or a play on words related to Luther's teachings or beliefs.