My boss give me a cancellation paper he too me to...

If your enquiry is related to arbitrary dismissal, here is the following information:
If the employer dismisses the worker for no legal reason, the worker can file a complaint with the Ministry of Human Resources and Emiratisation
Compensation for arbitrary dismissal, which is not more than three months' salary
which is calculated on the last wage the worker was getting.
The employer can apply for the cancellation of the worker's visa by the General Administration of Residence, and the worker can contact the General Administration of Residence in order to stop the decision to cancel the visa.
With the submission of documents proving the existence of a worker's complaint against his employer.
If you have signed the cancellation paper, your signature weakens your legal position, but you can submit your bank statement which has not been transferred from the employer from the date of your signature on the cancellation paper and attach it to the complaint to confirm that you have not obtained your financial rights.
Here is the text of the new UAE Labour Code, which relates to your inquiry:
Article 47:
Unlawful termination of the worker's service
Termination of the employee's employment by the employer is illegal, if termination of the employee's employment is due to his progress.
with a serious complaint to the Ministry or an action against the employer proved to be valid.
The employer is obliged to pay the worker fair compensation assessed by the competent court, if the dismissal is found to be unlawful.
In accordance with item (1) of this article, the amount of compensation shall be determined taking into account the type of work and the amount of damage suffered.
In any event, the amount of compensation shall not exceed the worker's wage for a period of (3) three.
Months calculated according to the last wage he was receiving.
The provisions of section (2) of this article are without prejudice to the worker's right to the warning allowance and the termination bonus payable to him.
In accordance with the provisions of this Decree-Law.