Hi sir my employer mention traning cost in contact...

If your inquiry is related to arbitrary dismissal, here is the following information:
If the employer dismisses the worker without a legal reason, the worker can file a complaint with the Ministry of Human Resources and Emiratisation in order to obtain compensation for arbitrary dismissal, which is compensation for a period not exceeding three months’ salary, which is calculated on the last wage he was receiving. The Worker .
Also, the employer is not entitled to ask the worker to pay the value of the training costs if there is no agreement in the work contract on that, and another labor complaint can also be filed against the employer.
Also, the employer does not have the right to refuse to return the worker's passport, and the worker can file a complaint with the police and the Ministry of Human Resources and Emiratisation, or file an urgent case against the employer in order to oblige him to return the passport.
  Here is the text of the new UAE labor law, related to your inquiry:
Article 47:
Wrongful termination of the worker's service
The termination of the worker's service by the employer is considered illegal, if the termination of the worker's service is due to his progress.
With a serious complaint to the Ministry or filing a claim against the employer that has been proven to be valid.
The employer shall pay fair compensation to the worker, to be estimated by the competent court, if the dismissal is proven to be unlawful.
In accordance with Clause (1) of this Article, the amount of compensation shall be determined taking into account the type of work and the amount of damage sustained.
In all cases, the amount of compensation shall not exceed the wage of the worker for a period of (3) three
Months calculated according to the last wage he was receiving.
The provisions of Clause (2) of this Article shall not prejudice the worker’s right to the warning allowance and end-of-service gratuity due to him.
In accordance with the provisions of this Decree-Law.

You have to explain in the complaint that you will submit to the Ministry of Human Resources and Emiratisation that you did not get the training.
And if you have not signed any papers indicating that you have received training, this matter will support your legal position in the complaint against the employer.

Labor complaints are submitted to the Ministry of Human Resources and Emiratisation, and the police do not accept this type of complaint