Regarding Attempt to Murder and anticipatory bail

There is a gang of criminals who attacked me with the intention of killing me but somehow I got rescued. I filed a case against them and police also filed FIR. The gang members have applied for an anticipatory bail in the district court and an arrest stay in Allahbad high court simultaneously. They have threatened me that as soon as they get a bail or stay, they will kill me. Is there any way to stop their bail and the arrest stay? I've heard that a person cannot apply for bail in district court and arrest stay in high court simultaneously. Can their stay be rejected because they have already applied for a bail in district court? Please help me..