I think it was a level 1 remove blindness scroll, but I'm not sure.
I'm 100% sure that the scrolls were each level 1 and were new in B5.
Here's a part of my stdout.txt:
SEND: cmd:10 len:4 (blen:5) (-1 -1)
 CMD:d len:19
 CMD:15 len:1171
 CMD:15 len:1171
 CMD:4 len:49
 CMD:4 len:61
 CMD:15 len:1171
 CMD:3 len:18
>You have no knowledge of divine prayers.<
>You can read the scroll but you don't understand it.<
SEND: cmd:10 len:4 (blen:5) (-1 -1)
 CMD:3 len:18
 CMD:d len:19
 CMD:15 len:1171
 CMD:15 len:1171
 CMD:4 len:49
 CMD:4 len:61
 CMD:15 len:1171
>You have no knowledge of divine prayers.<
>You can read the scroll but you don't understand it.<
SEND: cmd:10 len:4 (blen:5) (-1 -1)
 CMD:3 len:18
 CMD:d len:19
 CMD:15 len:1171
 CMD:15 len:1171
 CMD:4 len:49
 CMD:4 len:61
 CMD:15 len:1171
SEND: cmd:10 len:4 (blen:5) (-1 -1)
>You have no knowledge of divine prayers.<
>You can read the scroll but you don't understand it.<
 CMD:3 len:18
 CMD:d len:19
 CMD:15 len:1171
 CMD:15 len:1171
 CMD:4 len:49
 CMD:4 len:61
 CMD:15 len:1171
>You have no knowledge of divine prayers.<
>You can read the scroll but you don't understand it.<
 CMD:3 len:18
 CMD:3 len:18
 CMD:3 len:18
 CMD:3 len:18
 CMD:3 len:18
Entering SetPriorityWidget(nWidgetID=19)..
Reader got EOF trying to read 1 bytes
CloseClientSocket()
Writer thread stopped
Reader thread stopped
STOP THREADS
Connection lost

Now for the stderr.txt:
PlayerCmd: lengths do not match (19!=18)
PlayerCmd: lengths do not match (19!=18)

Perhaps person has better memory than me...

I just wanted to test the new prayers. I only tested remove confusion out, though.