If you play as a warrior I believe you haven't put any points into Summon Ghost, did you?
If that's true, Summon Ghost(SG) at only level 1 is weak ! If you're level 14 you can have already a SG that's of around your own level (5/5 points invested in SG)!

Like Raze said : there's a Scrine just after the library, so summon your Creature, try to run & jump along the Black Ring Members straight to that Scrine and use it .

If this all you can't survive, try this :
spend 1 skillpoint in Hide in Shadows (Priest Skill) and use this to run invisible to that Scrine !
But Warning: as long as an enemy is busy to attacking you (arrows, magic or melee!), Hid in Shadows will fail if you try it! So first prepair your Creature and if the battle starts, jump back on a save spot (out of the line of any enemy (ranger/mage)),
save the game (make a separate save game if you wish)
and use Hide in Shadows(HiS) to run to the Scrine wink
At level 1 in HiS you're 10 seconds invisible, or as long as your mana pool isn't empty ! wink

Good Luck smile

On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin,
it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !