Answer:
Based on these definitions I searched, I would go with aspersion since the guy's reputation would fall.
Explanation:
aspersion: an attack on the reputation or integrity of someone or something.
abnegation: the act of renouncing or rejecting something.
approbation: approval or praise.
aberration: a departure from what is normal, usual, or expected, typically one that is unwelcome.
arrogation: to claim or seize without justification
Answer:
Xander offered to hide cassia's artefact
