EXHIBIT 5.1

                    [Morgan, Lewis & Bockius LLP Letterhead]



                                February 13, 2004

Fidelity National Financial, Inc.
601 Riverside Avenue
Jacksonville, Florida  32204

                Re:     Fidelity National Financial, Inc. Registration Statement
                        on Form S-4

Ladies and Gentlemen:

        We have acted as special counsel to Fidelity National Financial, Inc., a
Delaware corporation ("FNF"), in connection with the Registration Statement on
Form S-4 (the "Registration Statement") for the purpose of registering with the
Securities and Exchange Commission (the "Commission"), under the Securities Act
of 1933, as amended (the "Securities Act"), the issuance of shares (the
"Shares") of FNF's common stock, par value $.0001 per share (the "Common
Stock"), pursuant to the Agreement and Plan of Merger and Reorganization, dated
as of January 27, 2004, by and among FNF, Fidelity Information Services, Inc.,
an Arkansas corporation and wholly owned subsidiary of FNF ("FIS"), Sunday
Merger Corp., a Pennsylvania corporation and wholly owned subsidiary of FIS,
Sunday Merger LLC, a Delaware limited liability company and wholly owned
subsidiary of FIS, and Sanchez Computer Associates, Inc., a Pennsylvania
corporation (the "Merger Agreement").

        This opinion is being furnished in accordance with the requirements of
Item 601(b)(5) of Regulation S-K under the Securities Act.

        In connection with this opinion, we have examined and relied upon
originals or copies, certified or otherwise identified to our satisfaction of:
(i) the Registration Statement in the form to be filed with the Commission on
the date hereof under the Securities Act; (ii) the Merger Agreement; (iii) a
specimen certificate representing the Common Stock; (iv) the Restated
Certificate of Incorporation and the Restated Bylaws of FNF, each as currently
in effect; and (v) certain resolutions of the Board of Directors of FNF. We have
also examined originals or copies, certified or otherwise identified to our
satisfaction, of such records of FNF and such other documents, certificates and
records as we have deemed necessary or appropriate as a basis for the opinion
set forth herein.

        In making our examination and in rendering our opinion set forth herein,
we have assumed the genuineness of all signatures, the authenticity of all
documents submitted to us as originals, the conformity to originals of all
documents submitted to us as certified, photostatic or conformed copies and the
authenticity of the originals of such copies. In making our examination of
documents executed by parties other than FNF, we have assumed that such



parties had the power, corporate or other, to enter into and perform all
obligations thereunder and have also assumed the due authorization by all
requisite action, corporate or other, and execution and delivery of such
documents by such parties of such documents and the validity and binding effect
thereof on such parties. As to any facts material to the opinion expressed
herein which we have not independently established or verified, we have relied
upon statements and representatives of officers and other representatives of FNF
and others.

        We do not express any opinion as to the effect on the opinion expressed
herein of (i) the compliance or noncompliance of any party to the Merger
Agreement (other than FNF) or (ii) the legal or regulatory status or the nature
of the business of any other party. We do not express any opinion as to the laws
of any jurisdiction other than the General Corporation Law of the State of
Delaware.

        Based upon and subject to the foregoing, we are of the opinion that the
Shares have been duly authorized for issuance and, when issued pursuant to the
Merger Agreement in accordance with the Merger Agreement, will be validly
issued, fully paid and nonassessable.

        We hereby consent to the filing of this opinion with the Commission as
an exhibit to the Registration Statement and to the use of our name under the
caption "Legal Matters" in the Registration Statement. In giving such consent,
we do not thereby admit that we are in the category of persons whose consent is
required under Section 7 of the Securities Act or the rules and regulations of
the Commission promulgated thereunder.


                                        Very truly yours,


                                        /s/ Morgan, Lewis & Bockius LLP