My siblings forced my parents to give property to them not me, what can i do?

If your parents are alive and the properties are there self acquired property then neither you nor any of your siblings have any rights over their properties.

If your parents are going ahead with giving away their properties to your siblings alone, legally you cannot prevent them from doing so.

Yes, your parents have the absolute discretion to deal with or dispose their property. Your rights, as the legal heir, is those properties left interstate after their lifetime.

What if my siblings are controlling my perants and pressuring or forcing?

Your parents are not children or insane. 

They can very well take a decision either to oblige the desires of their children or to reject them and distribute their property as per their choice. 

If they are under pressure or threat they can approach police or senior citizens tribunal for protection. 

You cannot put pressure on your parents or restrain your siblings in this regard. 

How did your brother take the retirement amount and property from your father either by way of a gift deed or else? Does your mother have property and how?