Print out a vaccine card. There is no way they can verify them.
Yes, I am telling you to lie about this.
It is a crime of conspiracy to ask any one else to commit a crime. I advise strongly to NOT break any laws. You will carry that record the rest of your working life.
With 0.002% risk from the jabs based on VAERS data, there is no need to be afraid of the jabs. But you are free to give up the job. I am against mandates.