I'm gonna try and explain what audit risk is and how to identify it but be warned, I SUCK at explaining things, so if you don't understand anything at all then it's not your fault, it's mine.
Firstly, audit risk is the risk that the auditor expresses an inappropriate audit opinion (that is, gives an unmodified audit report / unqualified audit opinion) even though the Financial Statements do contain a misstatement(s) that is/are material either individually or in aggregate.
Audit risk is basically the multiple of Inherent risk, control risk and detection risk. (You should be knowing the definitions as you stated)
Inherent risk and control risk are collectively called Financial Statement Risk so Audit Risk = FS Risk X Detection risk.
If I recall correctly, most questions in F8 asked either about business risk and/or financial statement risk.
You should already be knowing the 3 types of business risks that are financial, operational and compliance.
When a question asks for business risks, all you have to do is identify the risks that the entity is exposed to.
When a question asks for financial statement risks or audit risks, you have to identify the risks that the entity is exposed to and how those risks might lead to a misstatement in the financial statements (what could go wrong in the financial statements).
A simple example is that, say, something has been found in an entity's product that is in breach of a law or regulation. The business risk is that the company is in breach of a law or regulation (compliance risk) and might be liable to fines and/or penalties. The financial statement risk is that liabilities might be understated, there may be possible impairment of inventories so inventories overstated and expenses understated thus leading to overall overstatement of profit.
I do hope you got at least 10% of what I wrote. Feel free to ask me to clarify anything or everything