Sit, Stay, Die.

Bran and Boogie pretty much hit the nail on the head. I play my fair share of Anubis and I can tell you this guide needs A LOT of correcting.

"You just need to get away and pop an ability on a jungle, and just keep running."

If you aren't inside the circle of a jungle camp, you won't be damaging the jungle monsters. So if you're gonna lifesteal froma jungle camp, you can't be running away.

Please don't use names like "OP'ness Confirmed" for your chapter titles. This will give new readers/players a false impression that your build is amazing. As Branmuffin pointed out, your build needs a bit of work.
Also, I'm not personally attacking you when I say this, so I'm sorry if this comes out offensive; that is not my intention.

Also, your skill order looks a bit funky to me.

Hi Asim,

As the build stands, I can't strongly suggest it. Here are the issues I see:

• Mode: Would be helpful to clarify which mode this is for...as it stands, this is NOT a Conquest build (you don't list any starter items, and in Conquest, Shoes of the Magi is strongly preferred for early poke potential).
  
  
• No pen: You end up getting Rod of Tahuti before you've added ANY penetration to the build. In fact...you have 0 penetration through the ENTIRE build. This is a big no-no. Spear of the Magus is a core item on him, and should be bought fairly early.
  
  
• Lifesteal: I'm guessing you don't know the details on Anubis' passive or the lifesteal cap...normally, for any god that DOESN'T have lifesteal boosting in their kit, they'll still only get 1 lifesteal item. Anubis' Sorrow gives him up to 100% scaling on lifesteal as long as he gets 3 stacks (easy to do, since ALL of his abilities deal multiple ticks of damage). The magical lifesteal cap is 60%. If you have Bancroft's Talon (which you do, good, it's basically core on him also), here is the lifsteal you get at FULL health:
  
  0 stacks: 15%
  1 stack: 20%
  2 stacks: 25%
  3 stacks: 30%
  
  If you're hurt (let's say 50% health), you're getting boosted lifesteal from Bancroft...roughly an extra 15%. Let's look at those Sorrow stacks again:
  
  0 stacks: 30
  1 stack: 40
  2 stacks: 50
  3 stacks: 60 (max)
  
  Sure, if you get Book of the Dead on top of Bancroft, you'll have very consistent lifesteal, as well as the potential health shield...but there are just some key items you're obviously missing that make double-lifesteal just a poor choice for him.
  
  
• Thoth is too late: You get Book of Thoth last......not sure what else to say here, but this is an EARLY game item due to the need to stack. Yes, it can help even late game, but there are reasons for building items in specific order.
  
  
• Relics: You list Aegis Amulet and Heavenly Wings, both of which are great relics for him. However, Purification Beads should ALSO be a potential relic that should always be listed. Always.
  
  
• Not saying it's wrong, per se, but your skill leveling is interesting. IF you can get set up correctly, Plague of Locusts is your highest standard damage-dealing ability (outside of the ult). It should be prioritized over Mummify in almost all cases.

Altogether, all of the points I've listed above are, for the most part, pretty serious issues. Would like to see these fixed, but it's also important that you actually understand the mechanics behind item choices. Appreciate you putting an effort into making builds...hopefully my points above help your understanding.