I have an problem here... I applied as DH in Israel not knowing that I was Transacting to a fake agent and the problem is they already stamped fake Israel Visa on my passport. I already traveled here in Qatar but the immigration denied my passport and they said that I will not work here, I will be going back to Philippines because of this fake visa stamp. What will I do?
Tell your government that your passport was damaged/spoiled and request a new one.
This does not resolve your problem that Qatar considers you a liar. They will send you back and for the rest of your life you will have to answer "yes" if an application asks "have you ever been denied a visa or deported?"
This will make it much harder to get future visa, but if you lie about the denial and get caught they will definitively reject your application and add a ban in yet another country.
I'm sorry if that sounds unsympathetic and does not answer "what shall I do" but there is little you can do now. Look for work in the Philippines.