Question about combat resolution and death trigger

Hi, if I have [[Shelob, Child of Ungoliant]] and I block [[Selfless Squire]] but there is still combat damage from another unblocked creature, would the food token copy of Selfless Squire enter in time to prevent the damage I would be dealt? I figured probably not but I'm still pretty new to magic and wasn't sure about state based action or combat damage priorities/resolutions. Thanks in advance!