I would be grateful for you if you can let me know what are the chances that an ad-interim mandatory injunction can be granted against me since the suit may take years to get disposed of and If it is granted before trial in favor of my sibling it may cause huge damage to me and my family as we are dependent only on it to meet ends.
The registered settlement deed cannot be nullified by your siblings through the suit filed by them.
This is legally valid document and settlement if legally valid, it canot be vitiated since it is a registered document executed by the donor during his life time and very well within the knowledge of he people who agitate it now and also it can be termed as valid for the reason the the door had been enjoying the life time interest by collecting the rent till his death.
These are certain very advantageous situation and grounds by which you can challenge the suit filed by your siblings.
You have to vacate the interim injunction granted by curt by filing a strong counter to their application seeking interim injunction.